Pale Moon 33.7.0

Pale Moon is a custom-built and speed optimized Firefox browser. The project uses contributed Open Source code to create a full-featured, speed optimized browser based on Firefox browser.

Having seen the advantages on other systems (e.g. Linux) with regards to programs being compiled specifically for the capabilities of the machine it is installed on, it became obviously clear that Windows users were at a disadvantage.

Mozilla only releases windows executables with maximum compatibility in mind, meaning that Firefox is made to run on as many different systems as possible, sacrificing efficiency and speed in the process to be compatible with, by current standards, absolutely ancient hardware.

Mozilla does not provide optimized browser packages for Windows. That means you may be lose speed and efficiency when you use your browser.

That needs to change. Therefore Pale Moon project offers custom-built and optimized Firefox browsers for Windows Operating Systems. Make sure to get the most speed and efficiency out of your browser!

Pale Moon Main features:

• Highly optimized for modern processors
• 100% Firefox sourced: As safe as the browser that has seen years of development.
• Support for Firefox extensions (add-ons), themes and personas
• Able to use existing Firefox profiles, bookmarks and settings with this migration tool
• Uses slightly less memory because of disabled redundant and optional code
• Significant speed increases for page drawing and script processing
• Support for HTML5 and WebGL (v4)
• Stability: experience fewer browser crashes.
• Support for SVG and Canvas, and downloadable fonts including WOFF
• Support for OOPP (Out-of-process plugin execution)

Users will find a slightly more conservative approach to changes in the user interface in the Pale Moon browser. It, although very close to Firefox, is (now more obviously so than before) a different product. However, these differences in layout do not prevent anyone from configuring their browser interface to exactly the way they want it to look and work. Including like Mozilla Firefox’s default layout if they so wish.

Changes in Pale Moon 33.7.0 (2025-04-08):

• Implemented CSS two-location color stop logic. This allows for two-location color stops (`color x% y%`) in gradients, which is shorthand for `color x%, color y%` where both colors are equal.
• Our minimum GCC version requirement to build is now 9.1.
• Improved channel handling when CSP blocks network redirects.
• Implemented several fixes for CORS preflight requests.
• Added explicit whitelisting from CSP content loading of javascript: scheme URLs.
• Updated the ffvpx library to 6.0.1, this time preventing video color range regressions. An update to 6.0 was previously backed out in 33.5.0.
• Updated the JPEG-XL library to 0.11.1 to pick up several fixes and improve decoding compatibility of jxl files.
• Updated the SQLite library to 3.49.1.
• Fixed a spec compliance issue with DOMRect and DOMQuad returning 0 if NaN was present. We now return NaN in that case, per spec.
• Fixed a spec compliance issue with NTLM authentication. We now compute Channel Binding Hashes using the certificate signature’s hash algorithm, per spec.
  Note that particularly weak algorithms are not used and SHA256 will be used as a minimum, instead, in those cases.
• Fixed a buildability issue on Mac with XCode 16.3.
• Added some additional safety checking to SharedArrayBuffers.
• Added some additional safety checking to XSLT compilation and transformation.
• Windows only: Added a preference widget.windows.follow_shortcuts_on_file_open to control how Windows File Open dialogs handle shortcut links. See implementation notes.
• Security bugs addressed: CVE-2025-3028 (DiD) and CVE-2025-3033 (see implementation notes).

Changes in Pale Moon 33.6.1 (2025-03-11):

• Simplified some WASM code generation in the Ion JIT compiler.
• Fixed a crash in loading external resource maps.
• Disabled potentially unsafe attempts at recovering JIT operations.
• Fixed some minor linking issues in about:rights.
• Updated the embedded emoji font to fix incorrect display of some of the wheelchair emoji.
• Security issues addressed: CVE-2025-1934 (DiD).

Homepage – https://www.palemoon.org

Minimum System Requirements:

• Windows 7, 8, 8.1, 10,11
• Windows Server 2008 R2 or later
• A processor with SSE2 instruction support
• 1 GB of RAM
• At least 200 MB of free (uncompressed) disk space

Size: 29.7 MB

DOWNLOAD Pale Moon for Windows x86

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DOWNLOAD Pale Moon Portable for Windows x86

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DOWNLOAD Pale Moon for Linux x64 – GTK3 tarball

DOWNLOAD Pale Moon for Linux x64 – GTK2 tarball