Firefox 153 Released

Longtime Slashdot reader williamyf writes: FireFox 153 was released today. The most important user-facing changes are improvements to PDF handling (you can now merge PDFs and add images to them), and HDR video playback (on Windows, provided HDR is active systemwide). Other under-the-hood changes include browser-wide containers and QWAC support. The full list is in the change notes.

But the most important feature is that this version is an ESR and, therefore, defines the ESR feature set for the next year. Why is being an ESR so important, you ask?

1.) ESR, rather than "normal" (a.k.a. Rapid Release), Firefox is the out-of-the-box browser for many important distros, including Debian, RHEL, Kali, Tails, SUSE Linux Enterprise, Slackware, and others.

2.) Many organizations, large and small, standardize on Firefox ESR as their default browser, regardless of the default browser included with their OS.

3.) Firefox ESR is the basis for many downstream projects, such as Waterfox and KaiOS. All these projects will inherit, for a year, whatever ESR brings to the table today.

4.) Many ISVs and SaaS providers, if they certify their wares for Firefox at all, certify for the ESR version only.

Please note that ESR 153 will not be offered as an automatic update until two months from now (ESR 140 will still be supported). If you want it now, you will need to download and install it manually.

Also of note, ESR 115 will be supported until March 2027. If you use an unsupported version of macOS or Windows (like Windows 7 or 8.x), this is the version to get. However, even Mozilla cautions against running a supported browser on an unsupported OS: "Note that Microsoft ended official support for Windows 7, 8, and 8.1 in January 2023. Unsupported operating systems receive no security updates and have known vulnerabilities. Without official support from Microsoft, maintaining Firefox for outdated operating systems becomes costly for Mozilla and risky for users."

Read more of this story at Slashdot.