After having read this article, I read a bit more about third-party cookie blocking, and I was reminded that cookies are not the only way to track internet user

After having read this article, I read a bit more about third-party cookie blocking, and I was reminded that cookies are not the only way to track internet users: localStorage, and cache tracking with HTTP ETag, also enable tracking. This led me to Safari which partitions cookies, cache and HTML 5 storage for all third-party domains. As far as I know, Firefox (and Chrome of course) don’t to that. It’s easy to check with the browser developer tools open: - Empty your cache. - Visit a website that uses a given font hosted on fonts.google.com. - You should see the HTTP request for the font in the network tab. - Then visit another website that uses the same font on fonts.google.com. - In Safari, you should see another HTTP request, because the cache is not shared. - In Chrome and Firefox, you’ll see the font is retrieved from the cache. Kudos to Apple for their work on the privacy features of Safari! I’d be happy to see Firefox put the same emphasis on this :-)