The Pale Moon Project - Custom-built and optimized Firefox-based browser for Windows

Welcome to the Pale Moon project homepage

Pale Moon is an Open Source, Firefox-based web browser for Microsoft Windows, 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 source with carefully selected features and optimizations to maximize the browser's speed*, stability and user experience, while maintaining compatibility with the thousands of Firefox extensions you have come to love and rely on.

This browser, even though close to Firefox in the way it works, offers a different set of features than its sibling. A few carefully selected features have been disabled that are not in high demand, and that do not interfere with the way web pages are displayed or function; all to maximize the efficiency of the browser. Please see the page with technical details to learn exactly what the browser supports, and what it doesn't support. For example, if you need accessibility features or parental controls, then please visit the Firefox homepage and get the official, non-optimized version of the browser.

With the current generation of Gecko-based browsers, there are a few other differences between Pale Moon and Firefox that are more obvious and not just "under the hood": contrary to what Mozilla has done with their redesign of the user interface, Pale Moon will continue to provide a familiar set of controls and visual feedback similar to previous versions, including grouped navigation buttons of a decent size, a bookmarks toolbar that is enabled by default, tabs next to page content by default (easily switchable) and not in the least a functional status bar, to name a few things.

To download the current version** of the Pale Moon browser, please click below for the web-installer, which will check your system's capabilities to ensure the browser will work on your processor and operating system, and allow a quick choice of browser architecture, or download the installer of your choice by going to the appropriate download page from the menu at the top of this page!

Download (web installer)

If you have any problems using the web-installer, please download manually.

Main features
  • Optimized for modern processors
  • Firefox sourced: As safe as the browser that has seen many years of development.
  • Uses slightly less memory because of disabled redundant and optional code
  • Smooth and speedy page drawing and script processing
  • Increased stability: experience fewer browser crashes.
  • Support for SVG and Canvas, and downloadable fonts including WOFF 
  • Extensive support for HTML5, CSS3 and WebGL
  • Support for Firefox extensions (add-ons) and themes
  • OOPP (Out-of-process plugin execution) to prevent browser crashes
  • More customization and configuration options than Firefox
  • Familiar, efficient user interface design (no Australis!)
  • Able to use existing Firefox profiles with the migration tool
Top news:

Pale Moon 24.4.2 has been released which is a small update to add OCSP-stapling, address security issues and fix a few bugs. More info in the release notes.

more news...

Minimum system Requirements:
  • Windows XP/Windows Vista/Windows 7/Windows 8/Server 2003 or later
  • For Windows XP, the latest service pack is required. (XP SP3 or XP x64 SP2)
  • A processor with SSE2 support (see list of supported processors)
  • 256 MB of free RAM (512 MB or more recommended)
  • At least 50 MB of free (uncompressed) disk space

Pale Moon is, and will always be, completely FREE to download and use! (Freeware)
But if you feel so inclined, if you enjoy the browser enough to help pay for bills for hosting this webpage and further development of the browser:

(suggested minimum of $2 due to fees)
Bitcoin (BTC): 1iYe7SKvne5ixT7mN5EU7vhuaAN8fXK9t
Litecoin (LTC): LPRK7FtFKNqrVTHhynHbZw4xJA7QL4w7go

Dress up your browser!

While you are here, get a matching Theme (persona) for Pale Moon! It's simple, click the image below and allow the site to install the theme:

Pale Moon Theme

or, if you prefer a dark persona to match a dark desktop theme, try this one:

Pale Moon Theme

An additional contributed theme can be found here.

If you are interested in keeping updated of new releases of the optimized Pale Moon web browser for windows, please register on the official Pale Moon forum and subscribe to "Announcements", or subscribe to the Atom feed of the announcements board.

You may also be kept up to date by following the Twitter feed or liking the Facebook page by clicking the social media icons top-right of this page.

* Please note that current, popular "benchmarks" are extremely limited in what they test and the way they test "browser speed". Pale Moon does not aim to have an "as high as possible benchmark score", but instead focuses heavily on overall browser smoothness, CPU usage, efficient networking and program-wide optimizations not related to a certain (limited) subset of functions. Benchmarks, by definition, do not provide a real world browsing scenario, and should not be relied on to determine "which browser is faster or better".

** For your convenience, Pale Moon only releases versions based on select and relevant version updates of the Firefox code, and will be released on a different release schedule than Firefox because of individual development, building and testing. If you need to run the very latest version of Mozilla Firefox code at all times (on the "bleeding edge") or prefer the latest features incorporated in Firefox development, then this browser may not be the best choice for you.
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Firefox, Mozilla Firefox and Mozilla are registered trademarks of the Mozilla Corporation.
Site and contents © 2009-2014 Moonchild Productions - All rights reserved
Pale Moon's distribution is subject to the following redistribution policy