Tor Browser 16.0a1 is now available from the Tor Browser download page and also from our distribution directory.This is the first Tor Browser Alpha release based on Firefox Rapid Release: read more about this important change in The Future of Tor Browser Alpha.This version includes important security updates to Firefox.Send us your feedbackIf you find a bug or have a suggestion for how we could improve this release, please let us know.⚠️ Reminder: Tor Browser Alpha release channel is for testing only. If you are at risk or need strong anonymity, stick with the stable release channel.Full changelogThe full changelog since Tor Browser 15.0a4 is:All PlatformsUpdated NoScript to 13.5.1.90101984Bug tor-browser#43792: Determine whether noscript_persist users need to have their NoScript settings migratedBug tor-browser#43998: Rebase Tor Browser Alpha onto 141.0Bug tor-browser#44118: Decide how to deal with upstream feature gates in a RR worldBug tor-browser#44280: Test stream isolationBug tor-browser#44333: Add the "No AI" version of DuckDuckGo to available search enginesBug tor-browser#44365: Fix CSS linting errors introduced for firefox 145Bug tor-browser#44391: Restrictions cascade blocks every capability in subframes (e.g. captchas)Bug tor-browser#44408: Fix TorDomainIsolator in 146Bug tor-browser#44418: Update built-in obfs4 bridgesBug tor-browser-build#41609: Move back to CDN77 for default snowflake bridgeBug tor-browser-build#41646: Update lyrebird version to v0.7.0Bug mullvad-browser#483: Add the "No AI" version of DuckDuckGo to available search enginesBug mullvad-browser#487: Search engines are sorted alphabetically rather than the desired orderWindows + macOS + LinuxUpdated Firefox to 146.0a1esrBug tor-browser#44302: Fix the flags of some about pagesBug tor-browser#44310: Default zoom always resets to 100%Bug tor-browser#44411: DownloadsTorWarning.sys.mjs fails to loadBug tor-browser#44419: Re-add the moz-toggle title attribute patchLinuxBug tor-browser#44273: Restore Noto CJK as Jigmo has a too low readabilityBug tor-browser#44315: Font/text issue with self-upgrade windowAndroidUpdated GeckoView to 146.0a1esrBug tor-browser#44303: Extension update job might never work on AndroidBug tor-browser#44324: Refactor the NSS no proxy-bypass patch on A-S to avoid -Wunreachable-codeBuild SystemAll PlatformsBug tor-browser#43951: Include product with the component in triage CSVsBug tor-browser-build#40903: Make xz multi-threadedBug tor-browser-build#41445: Better handle bugzilla "Web Compatibility" issues in generate-bugzilla-triage-csvBug tor-browser-build#41607: Fix regression from #41373 in tools/count-mar-downloadsBug tor-browser-build#41608: Add per-platform numbers for incrementals in count-mar-downloadsBug tor-browser-build#41643: Update toolchains for Firefox 146Bug tor-browser-build#41644: Self-hosted browser extensions support in relprep.pyBug tor-browser-build#41647: Add a XZ_DEFAULTS to set_default_envBug tor-browser-build#41648: Add a mozconfig to projects/geckoviewBug tor-browser-build#41654: Make relprep.py update Moat settingsWindows + macOS + LinuxBug tor-browser-build#41662: Add python-zstandard to desktop containersWindows + Linux + AndroidBug tor-browser-build#41580: Update Go major to 1.25.xUpdated Go to 1.25.5macOSBug tor-browser-build#41665: Update macos signing wrapper for new executable gpu-helper.appLinuxBug tor-browser-build#41601: Upstream droppped Linux i686 supportBug tor-browser-build#41627: Firefox build system needs a more recent version of OpenSSL on LinuxBug tor-browser-build#41632: Ship Linux aarch64 builds in Alpha Release ChannelBug tor-browser-build#41639: Remove linux-arm targetBug tor-browser-build#41640: Clean the GCC config fileAndroidBug tor-browser#44360: Patch the vendored Gradle Nimbus pluginBug tor-browser#44370: Always produce target.maven.zipBug tor-browser-build#41485: Retire get_gradle_dependencies_list and create a simple way to update gradle depsBug tor-browser-build#41573: Remove Android x86 supportBug tor-browser-build#41617: Pass page size to zipalignBug tor-browser-build#41620: Do not rerun zipalign when signingBug tor-browser-build#41621: Remove support using older android build tools when signing 14.5 releases in tools/signing/wrappers/sign-apkBug tor-browser-build#41628: android_ndk_version and revision can be grouped togetherBug tor-browser-build#41636: Update the scripts to manage Gradle dependenciesBug tor-browser-build#41666: Normalize the path to tor-expert-bundle.aarBug tor-browser-build#41669: Restore UglifyJS but for Android x86_64 applications releases