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Pale Moon 33.1.0

Pale Moon

Pale Moon is an Open Source, Goanna-based web browser available for Microsoft Windows, Linux and Android, focusing on efficiency and ease of use. Make sure to get the most out of your browser!

Pale Moon offers you a browsing experience in a browser completely built from its own, independently developed source that has been forked off from Firefox/Mozilla code, with carefully selected features and optimizations to improve the browsers speed, resource use, stability and user experience, while offering full customization and a growing collection of extensions and themes to make the browser truly your own.


  • Optimized for modern processors
  • Based on proprietary optimized layout engine (Goanna)
  • Safe: forked from mature Mozilla code and regularly updated
  • Secure: Additional security features and security-aware development
  • Supported by our user community, and fully non-profit
  • Familiar, efficient, fully customizable interface
  • Support for full themes: total freedom over any elements design
  • Support for easily-created lightweight themes (skins)
  • Smooth and speedy page drawing and script processing
  • Increased stability: experience fewer browser crashes
  • Support for many Firefox extensions
  • Support for a growing number of Pale Moon exclusive extensions
  • Extensive and growing support for HTML5 and CSS3
  • Many customization and configuration options

Pale Moon 33.1.0 changelog:

New features

  • Implemented support for single-use meta tag. This implementation allows use of it without specifying a second meta tag to actually load the linked document which was originally intended for this tag (to hint to a browser it should pre-load the document for fast painting).
  • Implemented CSP v3 keywords script-src-elem, script-src-attr, style-src-elem and style-src-attr.
  • Enabled the use of html5's by default. While this is not yet a complete implementation, use of it in the wild dictated we enable this early. The implementation should functionally suffice for usage seen so far.
  • Added support for Emoji 15.1.
  • Implemented webkitURL legacy window alias for URL for web compatibility.
  • Implemented CSS shorthands margin-block, margin-inline, padding-block and padding-inline.
  • Added support for querying CPU capabilities (SSE2/AVX/AVX2) to the Navigator interface. For privacy reasons this is not exposed to the web, but can be used by extensions.


  • Fixed broken mousewheel scrolling if building with --disable-npapi.
  • Fixed a minor issue with XUL tree display in some circumstances.
  • Dev: Aligned canvas Path2D.addPath with the updated spec. It now supports DOMMatrix as opposed to SVGMatrix.
  • Removed Stylo (Gecko Rust style system) leftovers from the source tree.
  • Fixed a few potential emoji display issues.
  • Fixed some issues with workers.
  • Fixed an issue with ctrl+c copying in devtools.
  • Fixed crashes when run under WINE because of its lack of support for IDXGIKeyedMutex.
  • Fixed a crash when dealing with a specific (unmaintained) extension.
  • Added .xrm-ms files to the executable warning list on Windows.
  • Added sanity checks on http/2 header sizes.
  • Fixed a potential issue in the JavaScript JIT compiler.
  • Pulled a few fixes from upstream for the OpenType Sanitizer.
  • Added a fix to avoid a potential issue when assigning a media data buffer.
  • Security issues addressed: CVE-2024-3863, CVE-2024-3302, CVE-2024-3857 DiD, CVE-2024-3859 and CVE-2024-3861 DiD.

Download: Pale Moon (64-bit) | Portable 64-bit | ~40.0 MB (Freeware)
Download: Pale Moon (32-bit) | Portable 32-bit
Links: Pale Moon Homepage | Add-ons | Themes | Extensions

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