40 ms·

Firefox Developer Edition

979 points by tazer 12y ago

JetSpiegel 12y ago
Just a rebranding of Aurora, focused on developers? I was expecting something more from all the fanfare.
- ancarda 12y ago
  I think the idea is Nightly/Aurora/Beta builds aren't just for Firefox Developers but Web Developers too and it would be beneficial if more web developers used this branch for development. Of course, don't forget to test in stable. Another thing I can think of is rather than prefixing CSS/JS, experimental features could always be enabled in the developer builds and it then kicks into life on stable when it's ready for the general public. Right now you need to change various flags for that to happen.
- dickvdbrink 12y ago
  It has some addons installed by default (ADB Helper, Firefox Developer Tools Adapter and Web IDE is turned on by default). I like the Firefox Developer tools but it feels like this one isn't that different from a nightly build with some plugins.
- callahad 12y ago
  There are new features (tools adapter, side-by-side profiles, compact theme, developer-friendly default preferences). But what's larger than any of that is the change in Mozilla's policy / conception of the pre-Beta channel. This is very much a v0 offering, of course, but it's an indication that we genuinely want to take developer feedback seriously and co-design this with you. We've given ourselves the freedom to ship tools into Developer Edition that aren't yet ready for Beta. We're willing to change the browser's appearance and defaults specifically for a web developer audience. If you have feature requests, please submit (or upvote) them on UserVoice: https://ffdevtools.uservoice.com/forums/246087-firefox-developer-tools-ideas https://ffdevtools.uservoice.com/forums/246087-firefox-devel... the DevTools team actively monitors and responds to requests there. Your ideas will get seen, and now, we have even more freedom to actually execute on them.
  - warp 12y ago
    Hm, so if I develop on this I will still have to test in the regular stable Firefox release, that seems unfortunate. Having more tools in a developer edition compared to the regular version of the browser seems fine, but at least for me I would like run it with the same rendering engine my users are likely to run.
    - ZenoArrow 12y ago
      I don't understand the problem. Responsible web developers test across multiple browsers anyway, and this edition allows you to hook the developer edition tools into other browsers.
pherocity_ 12y ago
Well, I'm getting a 404 when trying to download. I'm guessing the new toolset doesn't help with this?
- _ducky 12y ago
  404 for me as well. Update: The link for Download at the bottom of the page worked for me.
  - sgarrity 12y ago
    Patience, friends.
  - sgarrity 12y ago
    Should be all set now.
dz0ny 12y ago
They bundled theme otherwise all old stuff. I was at least expecting remote API, more UI fixes with dev tools. /me Loves Chrome Dev tools, anything less is a waste of time...
- Yoric 12y ago
  DevTools support remote debugging. I'm using it to remotely debug my mobile app right now. Is that what you call remote API?
- Someone1234 12y ago
  They don't seem to have anything akin to Chrome's mobile emulator. They have "Responsive Design View" but it is much less feature complete than Chrome's mobile emulator, only seems to set a resolution.
  - Yoric 12y ago
    If you launch WebIDE, you'll see that it can install Firefox OS emulators. I think it can connect with an Android emulator, too, but I haven't checked.
timdorr 12y ago
Here's the prettier link to download: https://www.mozilla.org/en-US/firefox/developer/ https://www.mozilla.org/en-US/firefox/developer/
- agumonkey 12y ago
  I believe this is the stub (~400Ko) Sniffing my laptop gave me this http://download-installer.cdn.mozilla.net/pub/firefox/nightly/latest-mozilla-aurora/firefox-35.0a2.en-US.win32.installer.exe http://download-installer.cdn.mozilla.net/pub/firefox/nightl... Felt weirdly generic since the name didn't indicate any special edition, but I ran it and it says developer edition. ---- tl;dr In case someone needs an offline installer, grab that url.
  - towelguy 12y ago
    The subt stopped downloading in my crappy connection and gave me this link to the installer: https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-mozilla-aurora/firefox-35.0a2.en-US.win32.installer.exe https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/late... Edit: Use the custom installation option to prevent it from becoming your default browser.
    - agumonkey 12y ago
      All that work for nothing, if only I had a crappy connection :)
  - shangxiao 12y ago
    I hope your laptop smells nice. I'm sure you meant sniffing your network traffic? Edit: Oh man I think I've hung out with the Python crowd for too long I think their rancor is starting to rub off on me ;)
  - tjbarbour 12y ago
    Thank you, as someone who develops almost exclusively offline, this was crucial ;)
  - 12y ago
SnaKeZ 12y ago
Linux?
- Attic 12y ago
  There's a linux version as well, it automatically gave me the tar ball.
tshadwell 12y ago
I noticed the logo loads slowly and it actually loads a huge x1024 image https://mdn.mozillademos.org/files/9069/firefox-dev-ed_logo-only_1024.png https://mdn.mozillademos.org/files/9069/firefox-dev-ed_logo-...
- groovecoder 12y ago
  We're working on this right now in #mdndev on irc.mozilla.org
  - NietTim 12y ago
    How many developers does it take to resize an image..?
    - ep103 12y ago
      I'd hope they don't all have access to their production servers.
    - pyre 12y ago
      Maybe someone is going to make it into an SVG...
- shangxiao 12y ago
  Did you analyse it with Firefox Developer Edition?
grk 12y ago
For those not liking the dark UI, you can switch by opening the dev tools, clicking the gear icon on the right and selecting "light theme".
- bnycum 12y ago
  Thanks. As someone who isn't even a Firefox user I would have never found this. The dark UI was tough for me to read.
- _jomo 12y ago
  In case it's already light, but looks a bit unclean then you might have set it to Firebug theme which apparently comes with Firebug. For some reason this was the default for me.
- andyfleming 12y ago
  The Dark UI looks really cool, but switching to the light theme feels so much better. It suddenly feels like Chrome except with better dev tools! Either way, the new UI changes in this edition make it way more elegant and appealing.
- daveoflynn 12y ago
  Thank you so much. I felt like I was in a teenager's bedroom. In dark theme, the contrast to the Yosemite system toolbar is terrible and the tab text is extremely hard to read.
pluc 12y ago
That's great. Now if everyone else could have an up-to-date, experimental-feature-activated browser, this would be useful.
- cdevroe 12y ago
  I agree. However, I think I'll use this for debugging my applications rather than relying on it to see how our users will see our apps.
  - jader201 12y ago
    Effective debugging often depends on us being able to see the app as others see our app.
- gtirloni 12y ago
  By everyone you mean other vendors? https://www.google.com/chrome/browser/canary.html https://www.google.com/chrome/browser/canary.html http://devchannel.modern.ie/ http://devchannel.modern.ie/ http://www.opera.com/developer http://www.opera.com/developer
  - pluc 12y ago
    I mean end users. I'd love to develop using one of these, but if 80% of the rest of the world can't see what I've done the way I see it when I do it, there's no real benefit here.
    - gtirloni 12y ago
      Got it. The "when I do it" part is the tricky one. They will see things the way you see it when Google/Mozilla/MS release the new version. I understand that might be an issue but releases have been moving much faster lately. There is hope!
hassanzaheer_ 12y ago
I would really like to see a good javascript profiling tool in FF. Chrome has one but I think it can be improved upon.
- Yoric 12y ago
  Have you tried the profiler in the devtools? If there's anything that you think is missing, don't hesitate to mention it here: https://ffdevtools.uservoice.com https://ffdevtools.uservoice.com
blowski 12y ago
Thanks! I've essentially been using a developer profile in Firefox for some time, but the OSX dock doesn't play well with profiles, so this makes things a lot easier.
jekrb 12y ago
There's no need to download this if you're already running firefox aurora. Just update and you'll find that firefox aurora is now firefox developer.
sergiotapia 12y ago
Just to clarify is this the tool they announced a few days ago with that small video?
- cvburgess 12y ago
  Yup - the very same
tbassetto 12y ago
I think it really should not prompt to be the default browser when you launch it (and maybe never show this prompt like Chrome Canary). A colleague had a weird race condition (I guess) with this prompt + the "how-to" overlays and Firefox Developer Edition stopped responding to clicks 3 seconds after launching it… Kudos for using a different profile than the classic Firefox/Nightly :)
- trvz 12y ago
  At installation, there's also a checkbox to set it as the default browser, and it's pre-checked. I think, even full-time web developers wouldn't want to set it as default, and Mozilla should retain themselves here.
  - craigds 12y ago
    FWIW I'm using it as my default browser. Maybe it's just me, but a developer browser is more than just for debugging websites. I really like the way they've customised certain things to be power-user-friendly (e.g. no patronising "Show Advanced Settings" buttons) I've always used the bleeding edge Aurora and Chrome, have never had substantial problems with that.
- publicfig 12y ago
  I had the same issue, the overlays hid the message and I wasn't able to tell that the default browser message was there in the first place (OS X)
  - rurounijones 12y ago
    Same issue, luckily was able figure out what was going on.
pandog 12y ago
Getting a 50kB/s download rate for the Linux bzip. If anyone's going to find that annoying, it's developers!
- kibwen 12y ago
  Confirm, speeds are positively glacial here using the official Aurora updater. If nothing else, I suppose that indicates overwhelming popularity. :P
Gracana 12y ago
I noticed there's a checkbox for "make FirefoxDeveloperEdition my default browser," is that just a vestigial thing from the regular FF installer, or is it actually safe for me to use FFDE as my regular browser?
- Yoric 12y ago
  I've been using Firefox Nightly (which is more experimental than FDE) for years, without any real problem. So, I believe it's safe.
- sp332 12y ago
  This page says "We'll include experimental tools that aren't yet ready to ride the trains to release." But https://hacks.mozilla.org/2014/11/mozilla-introduces-the-first-browser-built-for-developers-firefox-developer-edition/ https://hacks.mozilla.org/2014/11/mozilla-introduces-the-fir... says "It’s a stable developer browser which is not only a powerful authoring tool but also robust enough for everyday browsing." So maybe the browser part is stable, but the tools are experimental? And it uses a different profile by default, so a broken plugin can't step on your history, bookmarks etc.
  - masklinn 12y ago
    From other comments, it's ~aurora (pre-beta) but it may get new tools from nightly much sooner, very soon after nightly and long before they move to beta. So the browser itself should be pretty stable, but the devtools may not be. It may also gets developer-specific UI customisations which never get merged into the beta/release channels.
mariusmg 12y ago
Is the theme available to use it with "regular" Firefox ?
mariusmg 12y ago
WebIDE still feels like a toy for now. Very little customization for the text editor for now. Also the browser has a shiny new dark theme but the text editor doesn't seem to support themes (and has a light theme as default).
- Yoric 12y ago
  I have been using it for a few weeks, and I find it extremely useful. Not the editor itself (I'm currently test-driving Atom), but the ability to quickly send my app to all my devices and emulators, and remote debug it.
towelguy 12y ago
Why emphatize on the download button that it is a "free download"? Maybe they'll add a payed option in the future?
- blowski 12y ago
  I think you're probably reading too much into the 'free' bit - it says the same on the download for the normal Firefox. If anything, it's a play on it being "free as in freedom".
- sp332 12y ago
  You get more clicks if you reassure people that it's free. Edit: I'm serious, here's an example https://vwo.com/blog/ab-test-case-study-how-two-magical-words-increased-conversion-rate-by-28/ https://vwo.com/blog/ab-test-case-study-how-two-magical-word...
- nnethercote 12y ago
  User feedback in the past has shown that a surprising number of people assume/fear they'll have to pay for it if you don't clearly say that it's free.
rdebeasi 12y ago
Exciting stuff! If you're already on Aurora, when you auto-update to developer edition, you'll switch over to the new dev profile and your bookmarks and settings will be gone. You can get at those by opening the profile manager and switching back to the default profile, or by using a stable version of Firefox. https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles https://support.mozilla.org/en-US/kb/profile-manager-create-...
- kibwen 12y ago
  In my case this was unnecessary and the update to Developer Edition preserved everything. Might have something to do with the fact that I already make use of multiple profiles. EDIT: Wait! The default profile was used when clicking "Restart" from within the updater, but when closing and reopening the browser manually it did indeed start up with a new profile.
- wrl 12y ago
  Developer edition doesn't seem to respect the setting for default profile. It always opens its `dev-edition-default` profile instead.
- vitaminjuk 12y ago
  You don't need to manually fiddle with profiles, just untick "Allow Firefox Developer Edition and Firefox to run at the same time" in settings to go back to your old profile rather than the segregated one
callahad 12y ago
Hi! Just a heads up that folks from the dev tools team will be monitoring this thread and are on-hand to answer questions. We'll try not to thread sit too much. :) In brief, the Developer Edition is a new release channel for Firefox, replacing Aurora (our pre-Beta channel). Everything else about the release cadence is the same. There are four major new features here: 1. The Firefox Tools Adapter ("Valence"), which lets you use the Firefox dev tools to inspect and debug pages in Chrome for Android and Safari for iOS. The goal: one set of tools to debug any browser. 2. Side-by-side profiles. The Developer Edition defaults to a profile named `dev-edition-default`, which makes it easier to run Developer Edition at the same time as a normal release version of Firefox. You don't have to deal with the profile switcher each time. 3. Developer-friendly defaults. Developer Edition ships with things like remote debugging and browser-chrome debugging enabled by default. 4. And, for all of you who hated Australis, a compact theme with square tabs. But those are just consequences of the single biggest change: 5. We have a new channel, which new rules. And we want to use it to build the best possible browser for web developers. We can ship new tools that aren't yet ready for the Beta channel, and we can change the browser's appearance and defaults specifically for web developers. We'll be watching this thread during launch, but you can always submit feature requests on UserVoice. The right people will see them: https://ffdevtools.uservoice.com/forums/246087-firefox-developer-tools-ideas https://ffdevtools.uservoice.com/forums/246087-firefox-devel... This isn't a finished product. It's an invitation. What tools do you need?
- youngtaff 12y ago
  Does it inspect Safari on iOS 8? (Google's ios-webkit-debug-proxy doesn't appear to yet)
  - callahad 12y ago
    Sure does! https://www.youtube.com/watch?v=eH0R10Ga4Hs https://www.youtube.com/watch?v=eH0R10Ga4Hs
    - youngtaff 12y ago
      So did you start with ios-webkit-debug-proxy? If so can you contribute the changes back - WebPagetest relies on this for driving iOS Safari
k__ 12y ago
WebIDE isn't for normal web-apps?
warcode 12y ago
Will this version survive months of usage with multiple open tabs without performance deteriorating massively like the regular firefox? I left FF after my 10th profile reset / reinstall to get back to "normal" performance.
- ZenoArrow 12y ago
  I swear this type of comment is becoming like a meme, it's pretty much repeated on every HN thread about Firefox. The response is standard too... Electrolysis. Wait for it. https://wiki.mozilla.org/Electrolysis/Roadmap https://wiki.mozilla.org/Electrolysis/Roadmap
  - warcode 12y ago
    I don't see how e10s will fix any of the profile-based performance degradation issues that have existed in FF for years. It will fix the crashing tab equals crashing browser issue, but that is a very different problem.
    - corin_ 12y ago
      I haven't followed (and probably don't know nearly enough anyway) details of e10s, but their claim is contrary to your view: > Performance would improve because the browser UI would not be affected by poor performance of content code (be it layout or JavaScript). Also, content processes could be isolated from each other, which would have similar security and performance benefits. https://wiki.mozilla.org/Electrolysis#Goal https://wiki.mozilla.org/Electrolysis#Goal
  - bryanlarsen 12y ago
    I'm kind of hoping that Eloctrolysis never becomes main-line. Right now I have a browser that isolates misbehaving web pages (Chrome) and a browser that allows me to have a million open tabs simultaneously (Firefox). If I could only choose one I'd choose the browser that isolates misbehaving web pages but both is even better.
    - 12y ago
groovecoder 12y ago
BTW, there are also some sweet new demos at https://developer.mozilla.org/demos/ https://developer.mozilla.org/demos/
fpgeek 12y ago
Is there an Android version? I can't find a download link when browsing from my Nexus 7.
Illniyar 12y ago
I love firefox, but this looks like a simple rebranding of the experimental beta version. If that version is going to be the same version that regular users get 12 weeks from now, it's hardly "tailored" for developers. Though I'm assuming getting rid of "unstable beta" marker gets a whole new group of unknowing beta testers.
- Siecje 12y ago
  The interface is for developers and will not be the same when in the stable channel.
UncleCarbs 12y ago
Am I the only one here <insert image of Walter> Who doesn't get how Dev Edition is different to normal firefox?
- kibwen 12y ago
  AIUI, it replaces the Aurora channel in the Firefox release schedule (which historically went Nightly -> Aurora -> Beta -> Release). In addition, whereas previously all experimental browser features would be held back in Nightly until fully-baked, this new channel will receive experimental developer tools from Nightly while still holding back all experimental non-developer features, so that the browsing experience itself isn't affected. (Also, it has a darker and more compact visual theme by default that echoes that of the built-in devtools.)
philo23 12y ago
I managed to get this when downloading Firefox Aurora over the weekend while reinstalling my OS. I wasn't expecting the dark UI when I opened it. I personally found it a little garish and I couldn't immediately see a way to turn it off. Anyone know if there's a way to switch it back?
- cadecairos 12y ago
  You can change the theme in the customization menu (there's a theme drop down on the bottom left), or by using the about:addons and going to "appearance"
  - bjz_ 12y ago
    Can you switch it to the normal OS theme? I'm really not a fan of the non-standard UI... :[
    - callahad 12y ago
      Yep! https://developer.mozilla.org/en-US/Firefox/Developer_Edition/Reverting https://developer.mozilla.org/en-US/Firefox/Developer_Editio...
  - philo23 12y ago
    Fantastic, I'll try it out.
_jomo 12y ago
If you don't like setting up your Browser again, you can go to about:preferences#general and uncheck Allow Firefox Developer Edition and Firefox to run at the same time This will cause Firefox Dev to use the Firefox profile with all your settings and Addons.
- lucideer 12y ago
  Thank you for this! That was quite a panicky first-run experience until I read this comment ...
ecaron 12y ago
Better conversation at https://news.ycombinator.com/item?id=8583257 https://news.ycombinator.com/item?id=8583257
cavneb 12y ago
Thank you for making this available. Great job Mozilla!
daphneokeefe 12y ago
Can I run this Dev Edition side-by-side with the regular version of Firefox, on the same machine?
- Siecje 12y ago
  Yeah, you can with other channels but you have to setup a different profile. By default this has a different profile.
- mbrubeck 12y ago
  Yes.
realusername 12y ago
I'm taking advantage of the fact that there's a few Mozilla developers around to say a big thank you to the team. I've never used most of the features of the developer edition except the console and everything is great on this developer edition. I'm a proud owner of a Firefox OS phone and the simulator is really good and fast, I think I'm going to make an app or two during my spare time ! A big thank you to all the team for your great work !
- Yoric 12y ago
  I'm not part of the devtools team, but I'm going to shamelessly accept the thank you on their behalf. Have fun coding :)
dschep 12y ago
Will https://launchpad.net/~ubuntu-mozilla-daily/+archive/ubuntu/firefox-aurora https://launchpad.net/~ubuntu-mozilla-daily/+archive/ubuntu/... switch to this new build or will there be a new PPA for Firefox Developer Edition?
- AaronMT 12y ago
  Mozilla doesn't own this PPA, it's third party. Chris Coulson, the maintainer had mentioned he doesn't have the time to maintain this anymore as I recall. Suggest just getting Aurora on aurora.mozilla.org
  - dschep 12y ago
    Oh, didn't realize that. I got it from FF directly for now, but was hoping there'd be an easier way to install it.
- gpo 12y ago
  Yes! (I automagically got firefox dev from that PPA)
sergiotapia 12y ago
Unfortunately, I can't acces HackerNews with this new browser. Just a heads up to the team, liking the browser so far! Secure Connection Failed An error occurred during a connection to news.ycombinator.com. The OCSP response contains out-of-date information. (Error code: sec_error_ocsp_old_response) The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. Please contact the website owners to inform them of this problem.
- bdunbar 12y ago
  It's working for me.
- diversewhat 12y ago
  I'm getting this error on CyanogenMod (latest for nexus) using Firefox 33.0 Help anyone?
zenocon 12y ago
Doesn't look like I can debug websockets? Chrome's network tab allows you to see websocket frames, but you have to navigate away from it and back to it again to refresh it -- which is a pain. I'm not seeing where/how to view frames in the network tab here, but perhaps I missed it?
- zimbatm 12y ago
  Last time I checked Firefox didn't support showing the websocket frames
  - mtrycz 12y ago
    I vote for this. Websockets have been around for years, and are becoming normal in day to day internet. Mozilla was one of the biggest promotors. I'm using them more and more. It just doesn't make sense that I can not debug websockets in Firefox.
  - zaphoyd 12y ago
    I end up doing much of my WebSocket app development in Chrome for this reason alone. I'd love to see WebSocket message inspection in the FF dev tools. I'd also like to see the tools go farther with minimal formatters for messages, particularly messages in JSON format.
GUNHED_158 12y ago
So, Safari on iOS setup is only available for Linux and Mac users?! Is there any plan to support IE simulation?
- canuckistani 12y ago
  Safari on iOS is currently working for Mac & OS X, but we plan to ship and support Windows as well.
Walkman 12y ago
Angelina Fabbro introduced this tool on a Web developer conference in Hungary [1] a couple of days ago. Here is a short summary as far as I can recall: - a couple of decades ago alert() was used by pretty much everybody for debugging, even her :) [2] - most of the developers use(d|s) Chrome for web development - this is the first serious dedicated tool for web developers which is not just a browser plugin you don't have to close a million tabs during development - they worked together with the Firebug team, there will be no duplicate functionality in the plugin and the browser - seamless Firebug integration. You can switch between Firebug and default theme, it will not break your workflow - NOT a new browser which you have to support, same engine as in Firefox, nothing new or special about it - multiple profiles - developer friendly default settings like enabled experimental CSS features, etc. - UX improvements for changing config, like switches for features, so you don't have to dig about:config - support debugging Android, even the iOS simulator or attached device real time - the dev team is really looking for feedback, they want to make web developers' life easier and put in features based on feedback - there will be no built in REST API tester tool like Postman REST Client at first, but I was not the first dev who asked for it, so they will consider it for sure - it will replace the firefox dev channel - themeable - much stable than nightly, but you can try out experimental browser features, so it's a good compromise [1]: http://instagram.com/p/vIiNp_vRXD/ http://instagram.com/p/vIiNp_vRXD/ [2]: https://twitter.com/hopefulcyborg/status/530033632636055552 https://twitter.com/hopefulcyborg/status/530033632636055552
px1999 12y ago
The developer tools are the only thing stopping me from switching back to FF from Chrome. The tooling in Firefox does seem to be improving rapidly (kudos to the devs for that, I'm not trying to trivialise the hard work that they've been putting in, by any means), but there are still several basic(?) features missing from the script debugger. Calling this a "developer edition" is IMO a misnomer until you can reasonably use it to develop pages/sites/applications - currently every other major "not-for-developer edition" browser already gives you almost everything this does, and in some areas quite a bit more. What would make it a developer browser to me: * Folder grouping on resources * Allowing webide or the script web tools tab to work with local folders (Chrome workspace equivalent) * Dynamic updates to scripts (Chrome workspace/dev tools equivalent) * The ability to open and/or display more than 1 script at a time. Tabs in developer tools should operate like browser tabs (orderable, poppable etc) I hope that this isn't just a re-branding exercise - the video, site and fanfare make it sound like Mozilla's aiming to make something great for developers (not to mention that the FF tools are headed in the right direction), but the first release and associated posts/comments seem to indicate that it's essentially a nicer packaging of what used to be aurora.
- Yoric 12y ago
  This is largely the codebase that used to be Aurora. However, it's not a "nicer packaging", it's a complete change of direction for Aurora. Now regarding your needs, the devtools teams is watching this thread, but just in case they miss your message, you might be better off making your requirements known here: https://ffdevtools.uservoice.com/ https://ffdevtools.uservoice.com/
wkdown 12y ago
For some reason, I convinced myself that Valence was going to allow us to change the engine to Webkit and Trident as well as Gecko. While testing iOS and Android is awesome, this would have been downright incredible.
nickpresta 12y ago
If a member of the dev tools team is watching, when first launching Firefox Developer Edition, I get a modal on top of a modal: http://i.imgur.com/w11zZJJ.png http://i.imgur.com/w11zZJJ.png This wouldn't be a problem usually (although strange) but I have to click the partially hidden box under the top most box to dismiss anything.
- callahad 12y ago
  Doh. That's http://bugzil.la/989947 http://bugzil.la/989947 :(
geniium 12y ago
Will see if that new version will bring us (web developer) anything helpful.
amelius 12y ago
Does it support multiple browser profiles? Can I easily switch between Gecko/IE 8,9,10/Webkit/etcetera?
deleted 12y ago
[deleted]
bmoresbest55 12y ago
The download is taking so long! Apparently this is highly desired?
KyleSanderson 12y ago
Not to be the guy to bring this up again, but if this is targeted for development why are sessions still limited to consuming 2GB of memory? Why is nightly still the only branch with 64bit builds?
- JohnTHaller 12y ago
  You'd be amazed how small a difference 64-bit makes in browsers. And in most apps for that matter. Source: I package apps for portable use for PortableApps.com. We analyze many of our apps for whether the trade-off of a size increase including both the 32-bit and 64-bit versions of an app is outweighed by the performance or stability advantages of the 64-bit version of a given app. Including the 64-bit version is worth it in VERY few instances. Even then, it won't help most users.
- nnethercote 12y ago
  Win64 builds aren't quite ready yet, but they're being actively worked on and a lot of progress has been made recently. Just a little longer now!
bad_user 12y ago
Wow, so Firefox's Preferences panel is being redesigned, or is this a "Developer Edition" thing? I like it - hopefully they'll also add searching capabilities. Yes, like in Chrome, that was a good design choice. On the theme, I personally don't like dark themes for my browser. But I like that this theme is space efficient, so I hope to see an equivalent for the stable Firefox, as I for one would use it, but please make it light instead of dark :) I do hope to see Electrolysis get some love. It's available in Nightly, but not in this developer preview. From what I understand, the next version (36) is the first version in which Electrolysis starts being moved between channels. Anyway, great job.
- kibwen 12y ago
  The preference panel redesign has been a long time coming (years, it feels like), and yes it does look fantastic compared to the prior tabbed popup window. Also, you can get a light version of the same compact theme by opening the devtools (Ctrl+Shift+I), clicking the gear in the upper-right, and selecting the "Light theme" radio button. It looks great!
zobzu 12y ago
"you are using an outdated version of firefox" Sup mozilla im on freaking nightly - detection seem to need work :)
nartz 12y ago
Firefox already does a lot - how about a website similar to 'RailsCasts' that takes different use cases and shows how to do them with FireFox plugins? I think its important to differentiate different users / use cases, because 'Web Developer' is pretty broad.
rpwverheij 12y ago
Just downloaded it and gave it a try. I've been using chrome for development for a long time and I must say this looks really good and I'd really like to switch cause I like the firefox image/mission much more. However I'm experiencing some problems editing my .less files directly from the browser. They don't show up in the list of style sheet files, even though I have "show original sources" checked. Where do I submit an issue for this?
- asantos3 12y ago
  Bugzilla? https://bugzilla.mozilla.org/ https://bugzilla.mozilla.org/
anonfunction 12y ago
What is this "hello" thing I see in the top right as the smiley chat icon? I've started a conversation, here's the link: https://hello.firefox.com/#call/fmX1j62g-P4 https://hello.firefox.com/#call/fmX1j62g-P4
- callahad 12y ago
  It's an experiment with WebRTC -- you can start peer-to-peer voice/video calls with it. No accounts or special software needed. Just modern browsers. :)
fiatjaf 12y ago
I've always used Chrome since I started developing, and I liked their Developer Tools. Since I switched to Firefox four months ago I've had a lot of trouble with FF DevTools: * debugging is too slow (or my computer is weak, but Chrome DevTools run smoothly); * debugging is very slow; * the debugger has some unpredictable behavior, like stopping at all calls that lead to some error, when I expected it to stop at the error properly.
alanh 12y ago
The annoying experience of launching this for the first time: https://news.ycombinator.com/item?id=8585522 https://news.ycombinator.com/item?id=8585522 Direct link: https://s3.amazonaws.com/f.cl.ly/items/2O3M10153r1h3A1P3T3T/First-run%20experience%20-%20Firefox%20Developer%20Edition.png https://s3.amazonaws.com/f.cl.ly/items/2O3M10153r1h3A1P3T3T/...
- tobr 12y ago
  I thought it was a bug in my install. You can't even close the top-most tour window, because of the covered prompt. Apparently, the wide button where all the text is hidden sets Firefox as default browser. I accidentally clicked it when trying to give the prompt focus. Thankfully, OS X asked me to confirm that I wanted to do this. I'm not sure what's worse, purposefully tricking me into setting default browser by hiding the text of the prompt, or starting with such a buggy first-run experience!
plainOldText 12y ago
Why the black theme? I think that as developers/designers we should use environments which closely resemble that of the users we're creating for. Colors influence people's emotions, as well as how they perceive a specific design. Even if you are a designer, you're still a user; a user of your own creations. And when you change the mindset to that of a user, why not change the environment as well? (just a thought)
- nnethercote 12y ago
  I suspect the motivation is to make it easy to distinguish the developer edition from the normal browser when you're running them side-by-side. There's a light theme that you can switch to from within the developer tools panel.
bigbango 12y ago
For those who like me are wary of running unverified binaries: - checksums: https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-mozilla-aurora/firefox-35.0a2.en-US.linux-x86_64.checksums https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/late... - signatures: https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-mozilla-aurora/firefox-35.0a2.en-US.linux-x86_64.checksums.asc https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/late... - signing key: https://ftp.mozilla.org/pub/mozilla.org/firefox/releases/latest/KEY https://ftp.mozilla.org/pub/mozilla.org/firefox/releases/lat... edit: reformatting 2nd edit: added https
- skrebbel 12y ago
  You're wary of running unverified binaries but you're OK when they're verified by a checksum downloaded over unencrypted HTTP?
  - bigbango 12y ago
    Thanks, I was so focused on finding the files that I forgot.
    - MichaelGG 12y ago
      The criticism is the same: You're worried about running binaries from a particular source, but will accept the signatures from the same source?
      - bigbango 12y ago
        Yes, when I don't have any out of band method for obtaining the key. Also, the sources aren't the same, the binary is downloaded from a mirror / CDN while the links I posted are from the main FTP server. edit: grammar corrections
esro360 12y ago
why isnt firebug installed by default ?
lechevalierd3on 12y ago
I get a kernel Panics when I move a fullscreen window from one screen to another one. If this can help https://gist.github.com/3on/cf6464e0ecb9f73aad6f https://gist.github.com/3on/cf6464e0ecb9f73aad6f
cturhan 12y ago
As it is developer edition, would you give us option to enable/disable CORS policy.
- nubbie 12y ago
  Trying Firefox again after many years on Chrome. As a developer, this is the thing I'm missing most so far. Have been using the Allow-Control-Allow-Origin: * extension[1] on Chrome, while not perfect, is tolerable. 1. https://chrome.google.com/webstore/detail/allow-control-allow-origi/nlfbmbojpeacfghkpbjhddihlkkiljbi?hl=en https://chrome.google.com/webstore/detail/allow-control-allo...
- gsam 12y ago
  I agree, although obviously it needs to be smart about how widely it disables. There was an addon available but it got removed from addons.mozilla.org I assume because it violated security. The developer still hosts the addon though.
kolme 12y ago
I have a few problems with this. First, using a browser which includes fancy experimental features might result in the page looking or behaving differently in the users' (stable) browsers. I see this as kind of risky, that's why I usually develop against stable browsers and use the nightly/aurora for personal browsing. Second, having browser-chrome debugging on by default is not very helpful for web developers, it actually gets in the way. It might be more useful to activate these features in the nightly channel, where people are more actively debugging the browser itself. Third, if this channel is the intended one for developers, why ship the development tools with the stable release?
kristopolous 12y ago
I'm going to complain that it doesn't work on my tiling window manager. Usually I can't do this because I'm not the target audience. But this time I am!!! So yeah, menu doesn't work in notion. There you go!
abhishekkr541 12y ago
Great for porn, I guess. :-/
IanCal 12y ago
Is it possible to create regular static websites using the webIDE? I couldn't find anything but it seems like everything is there to be able to do this.
fz7412 12y ago
i can't install the firefox developer edition on ubuntu despite all efforts !
gsam 12y ago
Looking forward to see how much of a 'Web IDE' can actually be achieved. I continually feel like I should be making things in the browser, but there's no adequate editor still.
pimlottc 12y ago
A little sad they didn't go with "Firefox Gold" for old time sake...
g4k 12y ago
A key feature that is missing is having the option to open a private window with all extensions disabled.
tzgrish 12y ago
Editing JavaScript functions on the fly is the main feature I hear devs complain about Firefox devtools (anecdotal). Chrome allows you to edit the JavaScript in the script tag which is amazingly intuitive. I realize editing variable values is possible while debugging, there are console commands and Scratchpad is neat, but it's not the same. Being able to edit the JS directly in the tab, save and see the changes on the page is a huge time saver. I was able to find a firebug feature request with applicable bugzilla links: https://code.google.com/p/fbug/issues/detail?id=5083 https://code.google.com/p/fbug/issues/detail?id=5083 Edit: changed reload to save
ganeshk 12y ago
HI there i need full download file to install in my system how do I?
ganeshk 12y ago
i need a full .exe file how do I get that?
- helb 12y ago
  http://download-installer.cdn.mozilla.net/pub/firefox/nightly/latest-mozilla-aurora/firefox-35.0a2.en-US.win32.installer.exe http://download-installer.cdn.mozilla.net/pub/firefox/nightl...
gear54rus 12y ago
That's really cool. Big thanks to the team behind this! The biggest feature for me was that it can run alongside the normal version of Firefox so I could tinker with it without disrupting day-to-day workflow. Not like it's a big deal or anything, but it still shows a warning when you enter about:config even though it's targeted at devs :)
art-of-code 12y ago
I honestly thought that Valence was a way to view renderings of the desktop versions of Chrome, Safari, Opera and IE within Firefox. Anyway, congratulations at the team at Mozilla for creating this. Can't wait to try the WebIDE for editing remote code.
robertschultz 12y ago
Some of the same points other are bringing up. 1. HTTP Request Builder (i.e. Postman) 2. Web Proxy 3. Make the Web IDE for anything like Atom or SublimeText 4. CSS media emulation The release looks great, congratulation guys. Looking forward to the future of this model.
mattfrommars 12y ago
Please tell me there is a feature like in chrome when you do shift-esc. I really would like to see CPU usages in a browser a memory breakdown like about:memory
andyfleming 12y ago
It would be great to see something like JSON View be built in. https://addons.mozilla.org/en-us/firefox/addon/jsonview/ https://addons.mozilla.org/en-us/firefox/addon/jsonview/ (There could be an option to disable "automatic JSON formatting" for those who don't like it for whatever reason)
chrift 12y ago
The only issue I have with the inspector tools in its current guise, is the fact you can't open an XHR request logged in the console in the network tab so you can view the nicer layout of parameters and stuff. Which is really annoying and the main reason I stick with firebug.
- chrift 12y ago
  Lack of being able to format a JSON response from the console is my main issue with this.
Superia 12y ago
I don't know if this belongs here, but my Aurora installation automatically replaced itself with Developer Edition, which would be fine if it did not also delete all history, bookmarks, saved passwords, plugins etc. Is there anyway to get that stuff back?
alwayslearning 12y ago
Why all the negativity? It's an early release and a great idea, not to mention they're actively soliciting feedback and answering questions in the thread. Thanks for this, Mozilla!
Walkman 12y ago
Here is the first talk about it by Angelina Fabbro if you are interested: https://www.youtube.com/watch?v=-LPZMgRIXJc https://www.youtube.com/watch?v=-LPZMgRIXJc

979 points by tazer 12y ago

JetSpiegel 12y ago

Just a rebranding of Aurora, focused on developers? I was expecting something more from all the fanfare.

ancarda 12y ago
I think the idea is Nightly/Aurora/Beta builds aren't just for Firefox Developers but Web Developers too and it would be beneficial if more web developers used this branch for development. Of course, don't forget to test in stable. Another thing I can think of is rather than prefixing CSS/JS, experimental features could always be enabled in the developer builds and it then kicks into life on stable when it's ready for the general public. Right now you need to change various flags for that to happen.
dickvdbrink 12y ago
It has some addons installed by default (ADB Helper, Firefox Developer Tools Adapter and Web IDE is turned on by default). I like the Firefox Developer tools but it feels like this one isn't that different from a nightly build with some plugins.
callahad 12y ago
There are new features (tools adapter, side-by-side profiles, compact theme, developer-friendly default preferences). But what's larger than any of that is the change in Mozilla's policy / conception of the pre-Beta channel. This is very much a v0 offering, of course, but it's an indication that we genuinely want to take developer feedback seriously and co-design this with you. We've given ourselves the freedom to ship tools into Developer Edition that aren't yet ready for Beta. We're willing to change the browser's appearance and defaults specifically for a web developer audience. If you have feature requests, please submit (or upvote) them on UserVoice: https://ffdevtools.uservoice.com/forums/246087-firefox-developer-tools-ideas https://ffdevtools.uservoice.com/forums/246087-firefox-devel... the DevTools team actively monitors and responds to requests there. Your ideas will get seen, and now, we have even more freedom to actually execute on them.
- warp 12y ago
  Hm, so if I develop on this I will still have to test in the regular stable Firefox release, that seems unfortunate. Having more tools in a developer edition compared to the regular version of the browser seems fine, but at least for me I would like run it with the same rendering engine my users are likely to run.
  - ZenoArrow 12y ago
    I don't understand the problem. Responsible web developers test across multiple browsers anyway, and this edition allows you to hook the developer edition tools into other browsers.

pherocity_ 12y ago

Well, I'm getting a 404 when trying to download. I'm guessing the new toolset doesn't help with this?

_ducky 12y ago
404 for me as well. Update: The link for Download at the bottom of the page worked for me.
- sgarrity 12y ago
  Patience, friends.
- sgarrity 12y ago
  Should be all set now.

dz0ny 12y ago

They bundled theme otherwise all old stuff. I was at least expecting remote API, more UI fixes with dev tools. /me Loves Chrome Dev tools, anything less is a waste of time...

Yoric 12y ago
DevTools support remote debugging. I'm using it to remotely debug my mobile app right now. Is that what you call remote API?
Someone1234 12y ago
They don't seem to have anything akin to Chrome's mobile emulator. They have "Responsive Design View" but it is much less feature complete than Chrome's mobile emulator, only seems to set a resolution.
- Yoric 12y ago
  If you launch WebIDE, you'll see that it can install Firefox OS emulators. I think it can connect with an Android emulator, too, but I haven't checked.

timdorr 12y ago

Here's the prettier link to download: https://www.mozilla.org/en-US/firefox/developer/ https://www.mozilla.org/en-US/firefox/developer/

agumonkey 12y ago
I believe this is the stub (~400Ko) Sniffing my laptop gave me this http://download-installer.cdn.mozilla.net/pub/firefox/nightly/latest-mozilla-aurora/firefox-35.0a2.en-US.win32.installer.exe http://download-installer.cdn.mozilla.net/pub/firefox/nightl... Felt weirdly generic since the name didn't indicate any special edition, but I ran it and it says developer edition. ---- tl;dr In case someone needs an offline installer, grab that url.
- towelguy 12y ago
  The subt stopped downloading in my crappy connection and gave me this link to the installer: https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-mozilla-aurora/firefox-35.0a2.en-US.win32.installer.exe https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/late... Edit: Use the custom installation option to prevent it from becoming your default browser.
  - agumonkey 12y ago
    All that work for nothing, if only I had a crappy connection :)
- shangxiao 12y ago
  I hope your laptop smells nice. I'm sure you meant sniffing your network traffic? Edit: Oh man I think I've hung out with the Python crowd for too long I think their rancor is starting to rub off on me ;)
- tjbarbour 12y ago
  Thank you, as someone who develops almost exclusively offline, this was crucial ;)
- 12y ago

SnaKeZ 12y ago

Linux?

Attic 12y ago
There's a linux version as well, it automatically gave me the tar ball.

tshadwell 12y ago

I noticed the logo loads slowly and it actually loads a huge x1024 image https://mdn.mozillademos.org/files/9069/firefox-dev-ed_logo-only_1024.png https://mdn.mozillademos.org/files/9069/firefox-dev-ed_logo-...

groovecoder 12y ago
We're working on this right now in #mdndev on irc.mozilla.org
- NietTim 12y ago
  How many developers does it take to resize an image..?
  - ep103 12y ago
    I'd hope they don't all have access to their production servers.
  - pyre 12y ago
    Maybe someone is going to make it into an SVG...
shangxiao 12y ago
Did you analyse it with Firefox Developer Edition?

grk 12y ago

For those not liking the dark UI, you can switch by opening the dev tools, clicking the gear icon on the right and selecting "light theme".

bnycum 12y ago
Thanks. As someone who isn't even a Firefox user I would have never found this. The dark UI was tough for me to read.
_jomo 12y ago
In case it's already light, but looks a bit unclean then you might have set it to Firebug theme which apparently comes with Firebug. For some reason this was the default for me.
andyfleming 12y ago
The Dark UI looks really cool, but switching to the light theme feels so much better. It suddenly feels like Chrome except with better dev tools! Either way, the new UI changes in this edition make it way more elegant and appealing.
daveoflynn 12y ago
Thank you so much. I felt like I was in a teenager's bedroom. In dark theme, the contrast to the Yosemite system toolbar is terrible and the tab text is extremely hard to read.

pluc 12y ago

That's great. Now if everyone else could have an up-to-date, experimental-feature-activated browser, this would be useful.

cdevroe 12y ago
I agree. However, I think I'll use this for debugging my applications rather than relying on it to see how our users will see our apps.
- jader201 12y ago
  Effective debugging often depends on us being able to see the app as others see our app.
gtirloni 12y ago
By everyone you mean other vendors? https://www.google.com/chrome/browser/canary.html https://www.google.com/chrome/browser/canary.html http://devchannel.modern.ie/ http://devchannel.modern.ie/ http://www.opera.com/developer http://www.opera.com/developer
- pluc 12y ago
  I mean end users. I'd love to develop using one of these, but if 80% of the rest of the world can't see what I've done the way I see it when I do it, there's no real benefit here.
  - gtirloni 12y ago
    Got it. The "when I do it" part is the tricky one. They will see things the way you see it when Google/Mozilla/MS release the new version. I understand that might be an issue but releases have been moving much faster lately. There is hope!

hassanzaheer_ 12y ago

I would really like to see a good javascript profiling tool in FF. Chrome has one but I think it can be improved upon.

Yoric 12y ago
Have you tried the profiler in the devtools? If there's anything that you think is missing, don't hesitate to mention it here: https://ffdevtools.uservoice.com https://ffdevtools.uservoice.com

blowski 12y ago

Thanks! I've essentially been using a developer profile in Firefox for some time, but the OSX dock doesn't play well with profiles, so this makes things a lot easier.

jekrb 12y ago

There's no need to download this if you're already running firefox aurora. Just update and you'll find that firefox aurora is now firefox developer.

sergiotapia 12y ago

Just to clarify is this the tool they announced a few days ago with that small video?

cvburgess 12y ago
Yup - the very same

tbassetto 12y ago

I think it really should not prompt to be the default browser when you launch it (and maybe never show this prompt like Chrome Canary). A colleague had a weird race condition (I guess) with this prompt + the "how-to" overlays and Firefox Developer Edition stopped responding to clicks 3 seconds after launching it… Kudos for using a different profile than the classic Firefox/Nightly :)

trvz 12y ago
At installation, there's also a checkbox to set it as the default browser, and it's pre-checked. I think, even full-time web developers wouldn't want to set it as default, and Mozilla should retain themselves here.
- craigds 12y ago
  FWIW I'm using it as my default browser. Maybe it's just me, but a developer browser is more than just for debugging websites. I really like the way they've customised certain things to be power-user-friendly (e.g. no patronising "Show Advanced Settings" buttons) I've always used the bleeding edge Aurora and Chrome, have never had substantial problems with that.
publicfig 12y ago
I had the same issue, the overlays hid the message and I wasn't able to tell that the default browser message was there in the first place (OS X)
- rurounijones 12y ago
  Same issue, luckily was able figure out what was going on.

pandog 12y ago

Getting a 50kB/s download rate for the Linux bzip. If anyone's going to find that annoying, it's developers!

kibwen 12y ago
Confirm, speeds are positively glacial here using the official Aurora updater. If nothing else, I suppose that indicates overwhelming popularity. :P

Gracana 12y ago

I noticed there's a checkbox for "make FirefoxDeveloperEdition my default browser," is that just a vestigial thing from the regular FF installer, or is it actually safe for me to use FFDE as my regular browser?

Yoric 12y ago
I've been using Firefox Nightly (which is more experimental than FDE) for years, without any real problem. So, I believe it's safe.
sp332 12y ago
This page says "We'll include experimental tools that aren't yet ready to ride the trains to release." But https://hacks.mozilla.org/2014/11/mozilla-introduces-the-first-browser-built-for-developers-firefox-developer-edition/ https://hacks.mozilla.org/2014/11/mozilla-introduces-the-fir... says "It’s a stable developer browser which is not only a powerful authoring tool but also robust enough for everyday browsing." So maybe the browser part is stable, but the tools are experimental? And it uses a different profile by default, so a broken plugin can't step on your history, bookmarks etc.
- masklinn 12y ago
  From other comments, it's ~aurora (pre-beta) but it may get new tools from nightly much sooner, very soon after nightly and long before they move to beta. So the browser itself should be pretty stable, but the devtools may not be. It may also gets developer-specific UI customisations which never get merged into the beta/release channels.

mariusmg 12y ago

Is the theme available to use it with "regular" Firefox ?

mariusmg 12y ago

WebIDE still feels like a toy for now. Very little customization for the text editor for now. Also the browser has a shiny new dark theme but the text editor doesn't seem to support themes (and has a light theme as default).

Yoric 12y ago
I have been using it for a few weeks, and I find it extremely useful. Not the editor itself (I'm currently test-driving Atom), but the ability to quickly send my app to all my devices and emulators, and remote debug it.

towelguy 12y ago

Why emphatize on the download button that it is a "free download"? Maybe they'll add a payed option in the future?

blowski 12y ago
I think you're probably reading too much into the 'free' bit - it says the same on the download for the normal Firefox. If anything, it's a play on it being "free as in freedom".
sp332 12y ago
You get more clicks if you reassure people that it's free. Edit: I'm serious, here's an example https://vwo.com/blog/ab-test-case-study-how-two-magical-words-increased-conversion-rate-by-28/ https://vwo.com/blog/ab-test-case-study-how-two-magical-word...
nnethercote 12y ago
User feedback in the past has shown that a surprising number of people assume/fear they'll have to pay for it if you don't clearly say that it's free.

rdebeasi 12y ago

Exciting stuff! If you're already on Aurora, when you auto-update to developer edition, you'll switch over to the new dev profile and your bookmarks and settings will be gone. You can get at those by opening the profile manager and switching back to the default profile, or by using a stable version of Firefox. https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles https://support.mozilla.org/en-US/kb/profile-manager-create-...

kibwen 12y ago
In my case this was unnecessary and the update to Developer Edition preserved everything. Might have something to do with the fact that I already make use of multiple profiles. EDIT: Wait! The default profile was used when clicking "Restart" from within the updater, but when closing and reopening the browser manually it did indeed start up with a new profile.
wrl 12y ago
Developer edition doesn't seem to respect the setting for default profile. It always opens its `dev-edition-default` profile instead.
vitaminjuk 12y ago
You don't need to manually fiddle with profiles, just untick "Allow Firefox Developer Edition and Firefox to run at the same time" in settings to go back to your old profile rather than the segregated one

callahad 12y ago

Hi! Just a heads up that folks from the dev tools team will be monitoring this thread and are on-hand to answer questions. We'll try not to thread sit too much. :) In brief, the Developer Edition is a new release channel for Firefox, replacing Aurora (our pre-Beta channel). Everything else about the release cadence is the same. There are four major new features here: 1. The Firefox Tools Adapter ("Valence"), which lets you use the Firefox dev tools to inspect and debug pages in Chrome for Android and Safari for iOS. The goal: one set of tools to debug any browser. 2. Side-by-side profiles. The Developer Edition defaults to a profile named `dev-edition-default`, which makes it easier to run Developer Edition at the same time as a normal release version of Firefox. You don't have to deal with the profile switcher each time. 3. Developer-friendly defaults. Developer Edition ships with things like remote debugging and browser-chrome debugging enabled by default. 4. And, for all of you who hated Australis, a compact theme with square tabs. But those are just consequences of the single biggest change: 5. We have a new channel, which new rules. And we want to use it to build the best possible browser for web developers. We can ship new tools that aren't yet ready for the Beta channel, and we can change the browser's appearance and defaults specifically for web developers. We'll be watching this thread during launch, but you can always submit feature requests on UserVoice. The right people will see them: https://ffdevtools.uservoice.com/forums/246087-firefox-developer-tools-ideas https://ffdevtools.uservoice.com/forums/246087-firefox-devel... This isn't a finished product. It's an invitation. What tools do you need?

youngtaff 12y ago
Does it inspect Safari on iOS 8? (Google's ios-webkit-debug-proxy doesn't appear to yet)
- callahad 12y ago
  Sure does! https://www.youtube.com/watch?v=eH0R10Ga4Hs https://www.youtube.com/watch?v=eH0R10Ga4Hs
  - youngtaff 12y ago
    So did you start with ios-webkit-debug-proxy? If so can you contribute the changes back - WebPagetest relies on this for driving iOS Safari

k__ 12y ago

WebIDE isn't for normal web-apps?

warcode 12y ago

Will this version survive months of usage with multiple open tabs without performance deteriorating massively like the regular firefox? I left FF after my 10th profile reset / reinstall to get back to "normal" performance.

ZenoArrow 12y ago
I swear this type of comment is becoming like a meme, it's pretty much repeated on every HN thread about Firefox. The response is standard too... Electrolysis. Wait for it. https://wiki.mozilla.org/Electrolysis/Roadmap https://wiki.mozilla.org/Electrolysis/Roadmap
- warcode 12y ago
  I don't see how e10s will fix any of the profile-based performance degradation issues that have existed in FF for years. It will fix the crashing tab equals crashing browser issue, but that is a very different problem.
  - corin_ 12y ago
    I haven't followed (and probably don't know nearly enough anyway) details of e10s, but their claim is contrary to your view: > Performance would improve because the browser UI would not be affected by poor performance of content code (be it layout or JavaScript). Also, content processes could be isolated from each other, which would have similar security and performance benefits. https://wiki.mozilla.org/Electrolysis#Goal https://wiki.mozilla.org/Electrolysis#Goal
- bryanlarsen 12y ago
  I'm kind of hoping that Eloctrolysis never becomes main-line. Right now I have a browser that isolates misbehaving web pages (Chrome) and a browser that allows me to have a million open tabs simultaneously (Firefox). If I could only choose one I'd choose the browser that isolates misbehaving web pages but both is even better.
  - 12y ago

groovecoder 12y ago

BTW, there are also some sweet new demos at https://developer.mozilla.org/demos/ https://developer.mozilla.org/demos/

fpgeek 12y ago

Is there an Android version? I can't find a download link when browsing from my Nexus 7.

Illniyar 12y ago

I love firefox, but this looks like a simple rebranding of the experimental beta version. If that version is going to be the same version that regular users get 12 weeks from now, it's hardly "tailored" for developers. Though I'm assuming getting rid of "unstable beta" marker gets a whole new group of unknowing beta testers.

Siecje 12y ago
The interface is for developers and will not be the same when in the stable channel.

UncleCarbs 12y ago

Am I the only one here <insert image of Walter> Who doesn't get how Dev Edition is different to normal firefox?

kibwen 12y ago
AIUI, it replaces the Aurora channel in the Firefox release schedule (which historically went Nightly -> Aurora -> Beta -> Release). In addition, whereas previously all experimental browser features would be held back in Nightly until fully-baked, this new channel will receive experimental developer tools from Nightly while still holding back all experimental non-developer features, so that the browsing experience itself isn't affected. (Also, it has a darker and more compact visual theme by default that echoes that of the built-in devtools.)

philo23 12y ago

I managed to get this when downloading Firefox Aurora over the weekend while reinstalling my OS. I wasn't expecting the dark UI when I opened it. I personally found it a little garish and I couldn't immediately see a way to turn it off. Anyone know if there's a way to switch it back?

cadecairos 12y ago
You can change the theme in the customization menu (there's a theme drop down on the bottom left), or by using the about:addons and going to "appearance"
- bjz_ 12y ago
  Can you switch it to the normal OS theme? I'm really not a fan of the non-standard UI... :[
  - callahad 12y ago
    Yep! https://developer.mozilla.org/en-US/Firefox/Developer_Edition/Reverting https://developer.mozilla.org/en-US/Firefox/Developer_Editio...
- philo23 12y ago
  Fantastic, I'll try it out.

_jomo 12y ago

If you don't like setting up your Browser again, you can go to about:preferences#general and uncheck Allow Firefox Developer Edition and Firefox to run at the same time This will cause Firefox Dev to use the Firefox profile with all your settings and Addons.

lucideer 12y ago
Thank you for this! That was quite a panicky first-run experience until I read this comment ...

ecaron 12y ago

Better conversation at https://news.ycombinator.com/item?id=8583257 https://news.ycombinator.com/item?id=8583257

cavneb 12y ago

Thank you for making this available. Great job Mozilla!

daphneokeefe 12y ago

Can I run this Dev Edition side-by-side with the regular version of Firefox, on the same machine?

Siecje 12y ago
Yeah, you can with other channels but you have to setup a different profile. By default this has a different profile.
mbrubeck 12y ago
Yes.

realusername 12y ago

I'm taking advantage of the fact that there's a few Mozilla developers around to say a big thank you to the team. I've never used most of the features of the developer edition except the console and everything is great on this developer edition. I'm a proud owner of a Firefox OS phone and the simulator is really good and fast, I think I'm going to make an app or two during my spare time ! A big thank you to all the team for your great work !

Yoric 12y ago
I'm not part of the devtools team, but I'm going to shamelessly accept the thank you on their behalf. Have fun coding :)

dschep 12y ago

Will https://launchpad.net/~ubuntu-mozilla-daily/+archive/ubuntu/firefox-aurora https://launchpad.net/~ubuntu-mozilla-daily/+archive/ubuntu/... switch to this new build or will there be a new PPA for Firefox Developer Edition?

AaronMT 12y ago
Mozilla doesn't own this PPA, it's third party. Chris Coulson, the maintainer had mentioned he doesn't have the time to maintain this anymore as I recall. Suggest just getting Aurora on aurora.mozilla.org
- dschep 12y ago
  Oh, didn't realize that. I got it from FF directly for now, but was hoping there'd be an easier way to install it.
gpo 12y ago
Yes! (I automagically got firefox dev from that PPA)

sergiotapia 12y ago

Unfortunately, I can't acces HackerNews with this new browser. Just a heads up to the team, liking the browser so far! Secure Connection Failed An error occurred during a connection to news.ycombinator.com. The OCSP response contains out-of-date information. (Error code: sec_error_ocsp_old_response) The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. Please contact the website owners to inform them of this problem.

bdunbar 12y ago
It's working for me.
diversewhat 12y ago
I'm getting this error on CyanogenMod (latest for nexus) using Firefox 33.0 Help anyone?

zenocon 12y ago

Doesn't look like I can debug websockets? Chrome's network tab allows you to see websocket frames, but you have to navigate away from it and back to it again to refresh it -- which is a pain. I'm not seeing where/how to view frames in the network tab here, but perhaps I missed it?

zimbatm 12y ago
Last time I checked Firefox didn't support showing the websocket frames
- mtrycz 12y ago
  I vote for this. Websockets have been around for years, and are becoming normal in day to day internet. Mozilla was one of the biggest promotors. I'm using them more and more. It just doesn't make sense that I can not debug websockets in Firefox.
- zaphoyd 12y ago
  I end up doing much of my WebSocket app development in Chrome for this reason alone. I'd love to see WebSocket message inspection in the FF dev tools. I'd also like to see the tools go farther with minimal formatters for messages, particularly messages in JSON format.

GUNHED_158 12y ago

So, Safari on iOS setup is only available for Linux and Mac users?! Is there any plan to support IE simulation?

canuckistani 12y ago
Safari on iOS is currently working for Mac & OS X, but we plan to ship and support Windows as well.

Walkman 12y ago

Angelina Fabbro introduced this tool on a Web developer conference in Hungary [1] a couple of days ago. Here is a short summary as far as I can recall: - a couple of decades ago alert() was used by pretty much everybody for debugging, even her :) [2] - most of the developers use(d|s) Chrome for web development - this is the first serious dedicated tool for web developers which is not just a browser plugin you don't have to close a million tabs during development - they worked together with the Firebug team, there will be no duplicate functionality in the plugin and the browser - seamless Firebug integration. You can switch between Firebug and default theme, it will not break your workflow - NOT a new browser which you have to support, same engine as in Firefox, nothing new or special about it - multiple profiles - developer friendly default settings like enabled experimental CSS features, etc. - UX improvements for changing config, like switches for features, so you don't have to dig about:config - support debugging Android, even the iOS simulator or attached device real time - the dev team is really looking for feedback, they want to make web developers' life easier and put in features based on feedback - there will be no built in REST API tester tool like Postman REST Client at first, but I was not the first dev who asked for it, so they will consider it for sure - it will replace the firefox dev channel - themeable - much stable than nightly, but you can try out experimental browser features, so it's a good compromise [1]: http://instagram.com/p/vIiNp_vRXD/ http://instagram.com/p/vIiNp_vRXD/ [2]: https://twitter.com/hopefulcyborg/status/530033632636055552 https://twitter.com/hopefulcyborg/status/530033632636055552

px1999 12y ago

The developer tools are the only thing stopping me from switching back to FF from Chrome. The tooling in Firefox does seem to be improving rapidly (kudos to the devs for that, I'm not trying to trivialise the hard work that they've been putting in, by any means), but there are still several basic(?) features missing from the script debugger. Calling this a "developer edition" is IMO a misnomer until you can reasonably use it to develop pages/sites/applications - currently every other major "not-for-developer edition" browser already gives you almost everything this does, and in some areas quite a bit more. What would make it a developer browser to me: * Folder grouping on resources * Allowing webide or the script web tools tab to work with local folders (Chrome workspace equivalent) * Dynamic updates to scripts (Chrome workspace/dev tools equivalent) * The ability to open and/or display more than 1 script at a time. Tabs in developer tools should operate like browser tabs (orderable, poppable etc) I hope that this isn't just a re-branding exercise - the video, site and fanfare make it sound like Mozilla's aiming to make something great for developers (not to mention that the FF tools are headed in the right direction), but the first release and associated posts/comments seem to indicate that it's essentially a nicer packaging of what used to be aurora.

Yoric 12y ago
This is largely the codebase that used to be Aurora. However, it's not a "nicer packaging", it's a complete change of direction for Aurora. Now regarding your needs, the devtools teams is watching this thread, but just in case they miss your message, you might be better off making your requirements known here: https://ffdevtools.uservoice.com/ https://ffdevtools.uservoice.com/

wkdown 12y ago

For some reason, I convinced myself that Valence was going to allow us to change the engine to Webkit and Trident as well as Gecko. While testing iOS and Android is awesome, this would have been downright incredible.

nickpresta 12y ago

If a member of the dev tools team is watching, when first launching Firefox Developer Edition, I get a modal on top of a modal: http://i.imgur.com/w11zZJJ.png http://i.imgur.com/w11zZJJ.png This wouldn't be a problem usually (although strange) but I have to click the partially hidden box under the top most box to dismiss anything.

callahad 12y ago
Doh. That's http://bugzil.la/989947 http://bugzil.la/989947 :(

geniium 12y ago

Will see if that new version will bring us (web developer) anything helpful.

amelius 12y ago

Does it support multiple browser profiles? Can I easily switch between Gecko/IE 8,9,10/Webkit/etcetera?

deleted 12y ago

[deleted]

bmoresbest55 12y ago

The download is taking so long! Apparently this is highly desired?

KyleSanderson 12y ago

Not to be the guy to bring this up again, but if this is targeted for development why are sessions still limited to consuming 2GB of memory? Why is nightly still the only branch with 64bit builds?

JohnTHaller 12y ago
You'd be amazed how small a difference 64-bit makes in browsers. And in most apps for that matter. Source: I package apps for portable use for PortableApps.com. We analyze many of our apps for whether the trade-off of a size increase including both the 32-bit and 64-bit versions of an app is outweighed by the performance or stability advantages of the 64-bit version of a given app. Including the 64-bit version is worth it in VERY few instances. Even then, it won't help most users.
nnethercote 12y ago
Win64 builds aren't quite ready yet, but they're being actively worked on and a lot of progress has been made recently. Just a little longer now!

bad_user 12y ago

Wow, so Firefox's Preferences panel is being redesigned, or is this a "Developer Edition" thing? I like it - hopefully they'll also add searching capabilities. Yes, like in Chrome, that was a good design choice. On the theme, I personally don't like dark themes for my browser. But I like that this theme is space efficient, so I hope to see an equivalent for the stable Firefox, as I for one would use it, but please make it light instead of dark :) I do hope to see Electrolysis get some love. It's available in Nightly, but not in this developer preview. From what I understand, the next version (36) is the first version in which Electrolysis starts being moved between channels. Anyway, great job.

kibwen 12y ago
The preference panel redesign has been a long time coming (years, it feels like), and yes it does look fantastic compared to the prior tabbed popup window. Also, you can get a light version of the same compact theme by opening the devtools (Ctrl+Shift+I), clicking the gear in the upper-right, and selecting the "Light theme" radio button. It looks great!

zobzu 12y ago

"you are using an outdated version of firefox" Sup mozilla im on freaking nightly - detection seem to need work :)

nartz 12y ago

Firefox already does a lot - how about a website similar to 'RailsCasts' that takes different use cases and shows how to do them with FireFox plugins? I think its important to differentiate different users / use cases, because 'Web Developer' is pretty broad.

rpwverheij 12y ago

Just downloaded it and gave it a try. I've been using chrome for development for a long time and I must say this looks really good and I'd really like to switch cause I like the firefox image/mission much more. However I'm experiencing some problems editing my .less files directly from the browser. They don't show up in the list of style sheet files, even though I have "show original sources" checked. Where do I submit an issue for this?

asantos3 12y ago
Bugzilla? https://bugzilla.mozilla.org/ https://bugzilla.mozilla.org/

anonfunction 12y ago

What is this "hello" thing I see in the top right as the smiley chat icon? I've started a conversation, here's the link: https://hello.firefox.com/#call/fmX1j62g-P4 https://hello.firefox.com/#call/fmX1j62g-P4

callahad 12y ago
It's an experiment with WebRTC -- you can start peer-to-peer voice/video calls with it. No accounts or special software needed. Just modern browsers. :)

fiatjaf 12y ago

I've always used Chrome since I started developing, and I liked their Developer Tools. Since I switched to Firefox four months ago I've had a lot of trouble with FF DevTools: * debugging is too slow (or my computer is weak, but Chrome DevTools run smoothly); * debugging is very slow; * the debugger has some unpredictable behavior, like stopping at all calls that lead to some error, when I expected it to stop at the error properly.

alanh 12y ago

The annoying experience of launching this for the first time: https://news.ycombinator.com/item?id=8585522 https://news.ycombinator.com/item?id=8585522 Direct link: https://s3.amazonaws.com/f.cl.ly/items/2O3M10153r1h3A1P3T3T/First-run%20experience%20-%20Firefox%20Developer%20Edition.png https://s3.amazonaws.com/f.cl.ly/items/2O3M10153r1h3A1P3T3T/...

tobr 12y ago
I thought it was a bug in my install. You can't even close the top-most tour window, because of the covered prompt. Apparently, the wide button where all the text is hidden sets Firefox as default browser. I accidentally clicked it when trying to give the prompt focus. Thankfully, OS X asked me to confirm that I wanted to do this. I'm not sure what's worse, purposefully tricking me into setting default browser by hiding the text of the prompt, or starting with such a buggy first-run experience!

plainOldText 12y ago

Why the black theme? I think that as developers/designers we should use environments which closely resemble that of the users we're creating for. Colors influence people's emotions, as well as how they perceive a specific design. Even if you are a designer, you're still a user; a user of your own creations. And when you change the mindset to that of a user, why not change the environment as well? (just a thought)

nnethercote 12y ago
I suspect the motivation is to make it easy to distinguish the developer edition from the normal browser when you're running them side-by-side. There's a light theme that you can switch to from within the developer tools panel.

bigbango 12y ago

For those who like me are wary of running unverified binaries: - checksums: https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-mozilla-aurora/firefox-35.0a2.en-US.linux-x86_64.checksums https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/late... - signatures: https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-mozilla-aurora/firefox-35.0a2.en-US.linux-x86_64.checksums.asc https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/late... - signing key: https://ftp.mozilla.org/pub/mozilla.org/firefox/releases/latest/KEY https://ftp.mozilla.org/pub/mozilla.org/firefox/releases/lat... edit: reformatting 2nd edit: added https

skrebbel 12y ago
You're wary of running unverified binaries but you're OK when they're verified by a checksum downloaded over unencrypted HTTP?
- bigbango 12y ago
  Thanks, I was so focused on finding the files that I forgot.
  - MichaelGG 12y ago
    The criticism is the same: You're worried about running binaries from a particular source, but will accept the signatures from the same source?
    - bigbango 12y ago
      Yes, when I don't have any out of band method for obtaining the key. Also, the sources aren't the same, the binary is downloaded from a mirror / CDN while the links I posted are from the main FTP server. edit: grammar corrections

esro360 12y ago

why isnt firebug installed by default ?

lechevalierd3on 12y ago

I get a kernel Panics when I move a fullscreen window from one screen to another one. If this can help https://gist.github.com/3on/cf6464e0ecb9f73aad6f https://gist.github.com/3on/cf6464e0ecb9f73aad6f

cturhan 12y ago

As it is developer edition, would you give us option to enable/disable CORS policy.

nubbie 12y ago
Trying Firefox again after many years on Chrome. As a developer, this is the thing I'm missing most so far. Have been using the Allow-Control-Allow-Origin: * extension[1] on Chrome, while not perfect, is tolerable. 1. https://chrome.google.com/webstore/detail/allow-control-allow-origi/nlfbmbojpeacfghkpbjhddihlkkiljbi?hl=en https://chrome.google.com/webstore/detail/allow-control-allo...
gsam 12y ago
I agree, although obviously it needs to be smart about how widely it disables. There was an addon available but it got removed from addons.mozilla.org I assume because it violated security. The developer still hosts the addon though.

kolme 12y ago

I have a few problems with this. First, using a browser which includes fancy experimental features might result in the page looking or behaving differently in the users' (stable) browsers. I see this as kind of risky, that's why I usually develop against stable browsers and use the nightly/aurora for personal browsing. Second, having browser-chrome debugging on by default is not very helpful for web developers, it actually gets in the way. It might be more useful to activate these features in the nightly channel, where people are more actively debugging the browser itself. Third, if this channel is the intended one for developers, why ship the development tools with the stable release?

kristopolous 12y ago

I'm going to complain that it doesn't work on my tiling window manager. Usually I can't do this because I'm not the target audience. But this time I am!!! So yeah, menu doesn't work in notion. There you go!

abhishekkr541 12y ago

Great for porn, I guess. :-/

IanCal 12y ago

Is it possible to create regular static websites using the webIDE? I couldn't find anything but it seems like everything is there to be able to do this.

fz7412 12y ago

i can't install the firefox developer edition on ubuntu despite all efforts !

gsam 12y ago

Looking forward to see how much of a 'Web IDE' can actually be achieved. I continually feel like I should be making things in the browser, but there's no adequate editor still.

pimlottc 12y ago

A little sad they didn't go with "Firefox Gold" for old time sake...

g4k 12y ago

A key feature that is missing is having the option to open a private window with all extensions disabled.

tzgrish 12y ago

Editing JavaScript functions on the fly is the main feature I hear devs complain about Firefox devtools (anecdotal). Chrome allows you to edit the JavaScript in the script tag which is amazingly intuitive. I realize editing variable values is possible while debugging, there are console commands and Scratchpad is neat, but it's not the same. Being able to edit the JS directly in the tab, save and see the changes on the page is a huge time saver. I was able to find a firebug feature request with applicable bugzilla links: https://code.google.com/p/fbug/issues/detail?id=5083 https://code.google.com/p/fbug/issues/detail?id=5083 Edit: changed reload to save

ganeshk 12y ago

HI there i need full download file to install in my system how do I?

ganeshk 12y ago

i need a full .exe file how do I get that?

helb 12y ago
http://download-installer.cdn.mozilla.net/pub/firefox/nightly/latest-mozilla-aurora/firefox-35.0a2.en-US.win32.installer.exe http://download-installer.cdn.mozilla.net/pub/firefox/nightl...

gear54rus 12y ago

That's really cool. Big thanks to the team behind this! The biggest feature for me was that it can run alongside the normal version of Firefox so I could tinker with it without disrupting day-to-day workflow. Not like it's a big deal or anything, but it still shows a warning when you enter about:config even though it's targeted at devs :)

art-of-code 12y ago

I honestly thought that Valence was a way to view renderings of the desktop versions of Chrome, Safari, Opera and IE within Firefox. Anyway, congratulations at the team at Mozilla for creating this. Can't wait to try the WebIDE for editing remote code.

robertschultz 12y ago

Some of the same points other are bringing up. 1. HTTP Request Builder (i.e. Postman) 2. Web Proxy 3. Make the Web IDE for anything like Atom or SublimeText 4. CSS media emulation The release looks great, congratulation guys. Looking forward to the future of this model.

mattfrommars 12y ago

Please tell me there is a feature like in chrome when you do shift-esc. I really would like to see CPU usages in a browser a memory breakdown like about:memory

andyfleming 12y ago

It would be great to see something like JSON View be built in. https://addons.mozilla.org/en-us/firefox/addon/jsonview/ https://addons.mozilla.org/en-us/firefox/addon/jsonview/ (There could be an option to disable "automatic JSON formatting" for those who don't like it for whatever reason)

chrift 12y ago

The only issue I have with the inspector tools in its current guise, is the fact you can't open an XHR request logged in the console in the network tab so you can view the nicer layout of parameters and stuff. Which is really annoying and the main reason I stick with firebug.

chrift 12y ago
Lack of being able to format a JSON response from the console is my main issue with this.

Superia 12y ago

I don't know if this belongs here, but my Aurora installation automatically replaced itself with Developer Edition, which would be fine if it did not also delete all history, bookmarks, saved passwords, plugins etc. Is there anyway to get that stuff back?

alwayslearning 12y ago

Why all the negativity? It's an early release and a great idea, not to mention they're actively soliciting feedback and answering questions in the thread. Thanks for this, Mozilla!

Walkman 12y ago

Here is the first talk about it by Angelina Fabbro if you are interested: https://www.youtube.com/watch?v=-LPZMgRIXJc https://www.youtube.com/watch?v=-LPZMgRIXJc