5 ms·

For anyone who might not be aware, Chrome also has the ability to save screenshots from the command line using: chrome --headless --screenshot="path/to/save/scr

by xnx 2y ago

For anyone who might not be aware, Chrome also has the ability to save screenshots from the command line using: chrome --headless --screenshot="path/to/save/screenshot.png" --disable-gpu --window-size=1280,720 "https://www.example.com https://www.example.com"

martinbaun 2y ago
Oh man, I needed this so many times didn't even think of doing it like this. I tried using Selenium and all different external services. Thank you! Works in chromium as well.
azhenley 2y ago
Very nice, I didn't know this. I used pyppeteer and selenium for this previously which seemed excessive.
Onavo 2y ago
What features won't work without GPU?
- xnx 2y ago
  [flagged]
  - dingnuts 2y ago
    oh good an AI summary with none of the facts checked, literally more useless than the old lmgtfy and somehow more rude "here's some output that looks relevant to your question but I couldn't even be arsed to look any of it up, or copy paste it, or confirm its validity"
- kylecazar 2y ago
  This flag isn't valid anymore in the new chrome headless. Disable GPU doesn't exist unless your on the old version (and then, it was meant as a workaround for Windows users only). I've used this via selenium not too long ago
cmgriffing 2y ago
Quick note: when trying to do full page screenshots, Chrome does a screenshot of the current view, then scrolls and does another screenshot. This can cause some interesting artifacts when rendering pages with scroll behaviors. Firefox does a proper full page screenshot and even allows you to set a higher DPS value. I use this a lot when making video content. Check out some of the args in FF using: `:screenshot --help`
- wereHamster 2y ago
  That's not the behavior I'm seeing (with Puppeteer). Any elements positioned relative to the viewport stay within the area specified by screen size (eg. 1200x800) which is usually the top of the page. If the browser would scroll down these would also move down (and potentially appear multiple times in the image). Also intersection observers which are further down on the page do not trigger when I do a full-page screenshot (eg. an element which starts animation when it enters into the viewport).
  - deleted 2y ago
    [deleted]
  - genewitch 2y ago
    bravo for puppeteer, i guess? "singlefile" is the only thing i've ever seen not do weird artifacts in the middle of some site renders, or, like on reddit, just give up rendering comments and render blank space instead until the footer. anyhow i've been doing this exact thing for a real long time, e.g. https://raw.githubusercontent.com/genewitch/opensource/refs/heads/master/screenshot.cgi https://raw.githubusercontent.com/genewitch/opensource/refs/... using bash to return json to some stupid chat service we were running
- xg15 2y ago
  I mean, if you have some of those annoying "hijack scrolling and turn the page into some sort of interactive animation experience" sites, I don't think "full page" would even be well-defined.
  - 2y ago
input_sh 2y ago
Firefox equivalent: firefox -screenshot file.png https://example.com --window-size=1280,720 A bit annoyingly, it won't work if you have Firefox already open.
- cmgriffing 2y ago
  LOL, you and I posted very similar replies at the same time.
- blueflow 2y ago
  > it won't work if you have Firefox already open now try and go ahead how you could isolate these instances so they cannot see each other. this leads into a rabbit hole of bad design.
  - yjftsjthsd-h 2y ago
    > now try and go ahead how you could isolate these instances so they cannot see each other. this leads into a rabbit hole of bad design. Okay, done: PROFILEDIR="$(mktemp -d)" firefox --no-remote --profile "$PROFILEDIR" --screenshot $PWD/output.png https://xkcd.com rm -r "$PROFILEDIR" What's the rabbit hole?
    - blueflow 2y ago
      Whats with the dbus interface?
      - yjftsjthsd-h 2y ago
        What? (If you're trying to point out that two firefoxes are capable of talking to each other via system IPC, then yes, fully isolating any two programs on the same machine requires at least containers but probably full VMs, which has nothing to do with Firefox itself, and you'd need to explain why in this situation we should care)
- UnlockedSecrets 2y ago
  Does it work if you use a different profile with -p?
hulitu 2y ago
> Chrome also has the ability to save screenshots Too bad that no browser is able to print a web page.
antifarben 2y ago
Does anyone know whether this would also be possible with Firefox, including explicit extensions (i.e. uBlock) and explicit configured block lists or other settings for these extensions?

by xnx 2y ago

martinbaun 2y ago

Oh man, I needed this so many times didn't even think of doing it like this. I tried using Selenium and all different external services. Thank you! Works in chromium as well.

azhenley 2y ago

Very nice, I didn't know this. I used pyppeteer and selenium for this previously which seemed excessive.

Onavo 2y ago

What features won't work without GPU?

xnx 2y ago
[flagged]
- dingnuts 2y ago
  oh good an AI summary with none of the facts checked, literally more useless than the old lmgtfy and somehow more rude "here's some output that looks relevant to your question but I couldn't even be arsed to look any of it up, or copy paste it, or confirm its validity"
kylecazar 2y ago
This flag isn't valid anymore in the new chrome headless. Disable GPU doesn't exist unless your on the old version (and then, it was meant as a workaround for Windows users only). I've used this via selenium not too long ago

cmgriffing 2y ago

Quick note: when trying to do full page screenshots, Chrome does a screenshot of the current view, then scrolls and does another screenshot. This can cause some interesting artifacts when rendering pages with scroll behaviors. Firefox does a proper full page screenshot and even allows you to set a higher DPS value. I use this a lot when making video content. Check out some of the args in FF using: `:screenshot --help`

wereHamster 2y ago
That's not the behavior I'm seeing (with Puppeteer). Any elements positioned relative to the viewport stay within the area specified by screen size (eg. 1200x800) which is usually the top of the page. If the browser would scroll down these would also move down (and potentially appear multiple times in the image). Also intersection observers which are further down on the page do not trigger when I do a full-page screenshot (eg. an element which starts animation when it enters into the viewport).
- deleted 2y ago
  [deleted]
- genewitch 2y ago
  bravo for puppeteer, i guess? "singlefile" is the only thing i've ever seen not do weird artifacts in the middle of some site renders, or, like on reddit, just give up rendering comments and render blank space instead until the footer. anyhow i've been doing this exact thing for a real long time, e.g. https://raw.githubusercontent.com/genewitch/opensource/refs/heads/master/screenshot.cgi https://raw.githubusercontent.com/genewitch/opensource/refs/... using bash to return json to some stupid chat service we were running
xg15 2y ago
I mean, if you have some of those annoying "hijack scrolling and turn the page into some sort of interactive animation experience" sites, I don't think "full page" would even be well-defined.
- 2y ago

input_sh 2y ago

Firefox equivalent: firefox -screenshot file.png https://example.com --window-size=1280,720 A bit annoyingly, it won't work if you have Firefox already open.

cmgriffing 2y ago
LOL, you and I posted very similar replies at the same time.
blueflow 2y ago
> it won't work if you have Firefox already open now try and go ahead how you could isolate these instances so they cannot see each other. this leads into a rabbit hole of bad design.
- yjftsjthsd-h 2y ago
  > now try and go ahead how you could isolate these instances so they cannot see each other. this leads into a rabbit hole of bad design. Okay, done: PROFILEDIR="$(mktemp -d)" firefox --no-remote --profile "$PROFILEDIR" --screenshot $PWD/output.png https://xkcd.com rm -r "$PROFILEDIR" What's the rabbit hole?
  - blueflow 2y ago
    Whats with the dbus interface?
    - yjftsjthsd-h 2y ago
      What? (If you're trying to point out that two firefoxes are capable of talking to each other via system IPC, then yes, fully isolating any two programs on the same machine requires at least containers but probably full VMs, which has nothing to do with Firefox itself, and you'd need to explain why in this situation we should care)
UnlockedSecrets 2y ago
Does it work if you use a different profile with -p?

hulitu 2y ago

> Chrome also has the ability to save screenshots Too bad that no browser is able to print a web page.

antifarben 2y ago

Does anyone know whether this would also be possible with Firefox, including explicit extensions (i.e. uBlock) and explicit configured block lists or other settings for these extensions?