Pale Moon 20.0.1

Pale Moon is a custom-built and optimized Firefox-based browser for Windows operating systems with current, high performance processors. It looks identical to the standard Firefox browser and supports Firefox extensions, themes and identities.


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

What's new in this version:

This is mostly a bugfix, security and performance update, but with a number of new features as well, based on the Firefox 20 code base. Full details can be found in the Release notes.

New/updated/changed major features:

  • Per-window Private Browsing. Learn more.
  • Panel-based download manager. See the detailed changelog for more information.
  • Ability to close hanging plugins, without the browser hanging.
  • Performance improvements related to common browser tasks.
  • Pale Moon specific Cairo performance fix for scaling/panning/zooming of HTML5 drawing surfaces.
  • Pale Moon specific fixes for performance of drawing elements (gradients, etc.).
  • HTML5 canvas now supports blend modes.
  • Various HTML5 audio and video improvements.
  • Update of the Status Bar code to work with the new code base.
  • ECMAScript for XML (E4X) is kept available for add-ons. Note that this will be removed in future versions as E4X is obsolete.
  • Developer tools have been enabled by default, considering the code is practically impactless unless actually used.
  • Theming has been worked on to provide better contrast on glass/dark themes and to work around styling issues present in v19.
  • Updated fallback character sets to Windows-1252.
  • Restored legacy function key handling (uplifted from Firefox 22).
  • Fixed UNC path handling (Chemspill Firefox 20.0.1).
  • Always enable the use of personas, also in Private Browsing mode.
  • Experimental: support for H.264 videos (disabled by default)

Download: Pale Moon 20.0.1 | 14.6 MB (Freeware)
Download: Portable Pale Moon 20.0.1 | 16.6 MB
Download: Pale Moon 20.0.1 x64 | 17.4 MB
View: Homepage | Release Notes

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