Pale Moon is an Open Source, Goanna-based web browser available for Microsoft Windows and Linux (with other operating systems in development), focusing on efficiency and ease of use. 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 a number of years ago, with carefully selected features and optimizations to improve the browser's stability and user experience, while offering full customization and a growing collection of extensions and themes to make the browser truly your own.
What's new in 35.0.2
This is a performance, bugfix and security release.
Changes/fixes: - Disabled the new :has() CSS implementation by default for performance reasons. See implementation notes. - Added a preference for handling of improper form element placement in HTML. See implementation notes. - Fixed several application crashes. - Backported an upstream libvpx VP8 decoder fix. - Fixed an issue in the BigInt implementation for specific JavaScript calls failing. - Fixed a potentially exploitable memory leak. - Security issues addressed: CVE-2026-100822, CVE-2026-100783, CVE-2026-100773 (DiD), CVE-2026-96869 (DiD) and CVE-2026-100791. Implementation notes: - The implementation for the CSS :has() pseudo element selector was disabled by default for causing additional severe performance issues on websites. This reduces web compatibility for some sites, but the feature turned out to have too much of a performance-impacting issue to leave it enabled by default. This should improve performance of the browser across the board while we investigate the root cause of this performance impact in our development going forward. Expect this feature to be enabled again later on after we have addressed the performance issues. If you don't mind the performance impact or have fast hardware, you can enable the feature with the preference layout.css.has-pseudo.enabled (set it to true) for broader website compatibility at the cost of processing. - In v35, we tightened our handling of form elements in HTML documents for security reasons, to adhere more strictly to the HTML standard regarding forms in tables. A detailed explanation can be found in this forum topic, including how to fix it in the documents or potential workarounds. You can control this with the preference html5.forms.standards_compliant. By default this is set to true to adhere to the spec, but you can (temporarily) disable this with false (with a page reload) to allow more lax parsing of forms similar to pre-v35 versions of Pale Moon.
Yes. Pale Moon is free and open-source software released under the MPL-2.0 license.
What is the latest version of Pale Moon?
The latest version is 35.0.2, released on Oct 6, 2026.
Is it safe to download Pale Moon?
The download button links to the official installer published on rm-eu.palemoon.org, the same file Windows Package Manager installs. You can verify the downloaded file by comparing its SHA-256 checksum with c15e0458e2e65d4cbc91b24452a9a9d745c9a1f0264c570ef4e1b75eee190529.
Which Windows versions does Pale Moon support?
Pale Moon runs on Windows and is available for 32-bit (x86), 64-bit (x64) systems.
How do I install Pale Moon silently?
Run the offline installer with "palemoon-35.0.2.win64.installer.exe" /S, or install it with Windows Package Manager: winget install --id=MoonchildProductions.PaleMoon -e --silent.
How do I uninstall Pale Moon?
Open Settings › Apps › Installed apps, find Pale Moon and select Uninstall. From the command line, run winget uninstall --id=MoonchildProductions.PaleMoon -e.
