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This patch updates the minimum supported browsers as follows:

We haven't made any changes to the supported Google Chrome version for a year, and this change allows us to remove "hacks" needed to support float: inline-start/inline-end in old browsers; see https://developer.mozilla.org/en-US/docs/Web/CSS/Reference/Properties/float#browser_compatibility.

Note that nowadays we usually try, where feasible and possible, to support browsers that are about two years old. By limiting support to only "recent" browsers we reduce the risk of holding back improvements of the built-in Firefox PDF Viewer, and also (significantly) reduce the maintenance/support burden for the PDF.js contributors.

Please note: As always, the minimum supported browser version assumes that a legacy-build of the PDF.js library is being used; see https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Questions#faq-support

This patch updates the minimum supported browsers as follows:
 - Google Chrome 118, which was released on 2023-10-10; see https://chromereleases.googleblog.com/2023/10/stable-channel-update-for-desktop_10.html

We haven't made any changes to the supported Google Chrome version for a year, and this change allows us to remove "hacks" needed to support `float: inline-start/inline-end` in old browsers; see https://developer.mozilla.org/en-US/docs/Web/CSS/Reference/Properties/float#browser_compatibility.

Note that nowadays we usually try, where feasible and possible, to support browsers that are about two years old. By limiting support to only "recent" browsers we reduce the risk of holding back improvements of the *built-in* Firefox PDF Viewer, and also (significantly) reduce the maintenance/support burden for the PDF.js contributors.

*Please note:* As always, the minimum supported browser version assumes that a `legacy`-build of the PDF.js library is being used; see https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Questions#faq-support
@Snuffleupagus
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Note: The minor version number was just bumped today, so assuming this patch lands before the next release no additional version number change should be required for this patch.

/botio-linux preview

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From: Bot.io (Linux m4)


Received

Command cmd_preview from @Snuffleupagus received. Current queue size: 0

Live output at: http://54.241.84.105:8877/dc6fc1a6a9337c5/output.txt

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From: Bot.io (Linux m4)


Success

Full output at http://54.241.84.105:8877/dc6fc1a6a9337c5/output.txt

Total script time: 1.09 mins

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LGTM. Thank you.

@Snuffleupagus Snuffleupagus merged commit 4f40a54 into mozilla:master Feb 9, 2026
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@Snuffleupagus Snuffleupagus deleted the Chrome-118 branch February 9, 2026 12:59
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3 participants