| Version | Change log |
| Portable Pale Moon 34.1.0 Mar 3, 2026 |
New features: Re-landed Xoroshiro128++ JavaScript PRNG to make it more robust while keeping high performance. This was previously backed out due to intermittent issues and crashes. Implemented JavaScript SubmitEvent support for HTML forms. Implemented JavaScript requestSubmit() for HTML forms. Implemented JavaScript toSorted(). Implemented JavaScript toReversed(). Implemented top-level await support for JavaScript modules. See implementation notes. Implemented pointer and hover CSS media queries. Enabled hardware-accelerated decoding for VP9 videos (where possible). Changes/fixes: Re-landed our expat library update, with fixes for large attribute parsing. Updated the JPEG-XL library to 0.11.2 to pick up security and performance fixes, and applied a spot-fix for big-endian hardware. Updated libtheora to 1.2.0. Updated libvpx to 1.16.0 with various fixes to retain compatibility with older MacOS and PowerPC platforms. Pale Moon, from this version forward, allows unencrypted websocket connections to localhost addresses even when the calling document was served encrypted. Fixed an issue in the new Cascade Layers implementation causing problems with UI elements and extensions. Fixed several issues with the new ICU library implementation in UXP: Fixed an issue where it was returning unexpected Unicode spaces in date strings instead of standard space characters, causing problems with web scripting. Fixed an issue with plural forms for Shuar, Welsh and several Slavic languages. Fixed an issue with letter dots in Lithuanian. Fixed an issue with word-wrapping in Tibetan. Fixed an intermittent browser crash related to removing cached image data, and improved image data cache handling as a whole. Further improved compatibility with Mac on PowerPC hardware. Restored support for building on 32-bit MacOS 10.6. Applied miscellaneous fixes for building on MacOS 10.5 (Leopard) and 10.6 (Snow Leopard). Fixed run-time issues on FreeBSD 15.*. Fixed an issue with applying image filters on |
| Portable Pale Moon 34.0.0 Jan 20, 2026 |
This is a new milestone release! There are many changes in this milestone; the most important ones are highlighted here. New features: Our default theme on Windows received a refresh and update. It should integrate better with Windows 11 now, and be more responsive to dark accent colors, among other things. Implemented WeakRef. See implementation notes. Implemented URL.canParse(). Implemented the inset-block and inset-inline CSS shorthands. Added a preference (privacy.forgetaboutsite.clearPasswords) to control clearing of passwords when using "forget about this site" in the permissions manager, and disabled clearing of passwords by default, since it was considered unexpected behavior by the community. Changed our JavaScript PRNG to Xoroshiro128++ to make it more robust while keeping high performance. Important updates and fixes: Re-landed CSS Cascade Layers support after the previous back-out. Re-landed CSS color-mix support after the previous back-out. RGB and HSL color spaces only, like previous. Implemented viewport overflow propagation logic. See implementation notes. Unprefixed CSS -moz-appearance; Pale Moon now accepts the unprefixed CSS appearance keyword. For compatibility, -moz-appearance and -webkit-appearance (if enabled) have been retained, although the long-term plan is to eventually remove the -moz prefixed one, so if you are an extension or theme developer, please consider switching your CSS to use appearance without a prefix. Fixed an intermittent but fairly prominent crash-to-desktop due to JavaScript garbage collection on certain modern sites. Fixed a crash on sites with certain types of CSP handling. Fixed a crash in WASM. Updated NSS to 3.90.9 (custom) to pick up several security and stability fixes. Updated ICU to v78.1. This is a major uplift for our internationalization subsystem, allowing further future developments for the Internationalization API. Updated Emoji support to Unicode 17. Updated our expat parser code to a more recent |
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