{"id":953,"date":"2026-10-30T23:15:14","date_gmt":"2026-10-30T22:15:14","guid":{"rendered":"https:\/\/www.rh-itsec.com\/blog\/?p=953"},"modified":"2026-10-30T23:15:14","modified_gmt":"2026-10-30T22:15:14","slug":"tor-browser-16-0-firefox-esr-153-redesigned-settings-and-generic-window-titles","status":"publish","type":"post","link":"https:\/\/www.rh-itsec.com\/blog\/tor-browser-16-0-firefox-esr-153-redesigned-settings-and-generic-window-titles\/","title":{"rendered":"Tor Browser 16.0: Firefox ESR 153, Redesigned Settings, and Generic Window Titles"},"content":{"rendered":"\n

The Tor Project has released Tor Browser 16.0, the first stable version built on Firefox ESR 153<\/strong>. This release is more than a routine update: it brings a completely redesigned settings interface, a new opt-in privacy feature called generic window titles, native ARM64 support for Linux, and a revamped offline manual. <\/p>\n\n\n\n

For users who rely on Tor Browser for anonymity and censorship circumvention, version 16.0 represents a significant update that brings the browser in line with a year’s worth of Firefox changes while maintaining Tor’s privacy enhancements.<\/p>\n\n\n\n\n\n\n\n

A Year of Firefox Changes, Audited for Privacy<\/h2>\n\n\n\n

Moving to Firefox ESR 153 means inheriting twelve months of Mozilla development. The Tor Project does not simply take the upstream code as is. Its annual ESR transition audit reviewed and addressed over 270 Bugzilla issues that could negatively affect user privacy or security. <\/p>\n\n\n\n

Features such as WebGPU are disabled until fully audited, and the new AI settings panel that appears in mainstream Firefox is hidden on desktop. This “inherit, then triage” approach prevents Tor Browser from shipping a faster engine that introduces new fingerprinting surfaces or unexpected data flows.<\/p>\n\n\n\n

Redesigned Settings: Cleaner, safer, and easier to navigate<\/h2>\n\n\n\n

The most visible change is the complete redesign of the desktop settings experience. Tor Browser 16.0 adopts the new about:preferences layout that Mozilla introduced in Firefox earlier this year. The longstanding “General” page has been retired, and its contents have been distributed across dedicated sections for Appearance, Downloads, Tabs and Browsing, Accessibility, and Languages.<\/p>\n\n\n\n

The Tor-specific pages, Connection and Security Level, have been rebuilt from scratch using Firefox\u2019s new components. These pages now look and feel consistent with the rest of the interface. This is important because these are the settings users access when they need to bypass censorship or increase security. <\/p>\n\n\n\n

Settings that could compromise privacy or make the browser easier to fingerprint <\/strong>are either hidden or accompanied by clear warnings. Existing preferences are preserved during migration, and a search bar at the top of the settings page helps users find options that may have moved.<\/p>\n\n\n\n

Generic Window Titles: Closing a Small but Persistent Leak<\/h2>\n\n\n\n

A new privacy option has been added to Privacy and Security > Protections<\/em> from Third-Party Applications: Generic Window Titles. By default, like most browsers, Tor Browser uses the title of the current page as the name of the window. However, other applications and the operating system itself can read these titles without special permissions, creating a local snooping vector, which is especially visible during screen sharing or when other software lists open windows.<\/p>\n\n\n\n

When this option is enabled, it replaces every window title with simply “Tor Browser”<\/strong>. This prevents other software from passively reading which pages you have open. The feature is opt-in for now. According to the Tor Project, more time is needed to evaluate potential side effects, particularly for users who depend on screen readers or highly customized desktop environments and window managers. <\/p>\n\n\n\n

The underlying mechanism has also been integrated into Firefox through the Tor Uplift Project. Advanced Firefox users can enable this feature by setting privacy.exposeContentTitleInWindow<\/em> to false in about:config<\/em>.<\/p>\n\n\n\n

Native ARM64 Linux Support-and the End of 32-Bit Linux<\/h2>\n\n\n\n

After a year of alpha testing, Tor Browser 16.0 brings native support for 64-bit ARM (AArch64)<\/strong> Linux to the stable channel. This covers devices such as Raspberry Pi<\/strong> boards and Apple Silicon Macs<\/strong> running Linux. Users who previously relied on the alpha branch for ARM support are encouraged to switch to the stable release, unless they intend to continue testing alpha builds. <\/p>\n\n\n\n

At the same time, the release ends support for 32-bit x86 Linux, following Firefox\u2019s own decision. According to The Tor Project, the affected population is very small, with only around 200 update checks per day from that platform, down from a peak of roughly 4,000 in 2019.<\/p>\n\n\n\n

A Rebuilt Manual and a Modern Android Interface<\/h2>\n\n\n\n

The built-in Tor Browser manual has been completely revamped. It now draws its content from the Tor Project\u2019s new Support Portal instead of from a set of documentation that was maintained separately. The manual is bundled with the desktop browser and can be read offline, which is particularly useful when troubleshooting a connection problem that prevents access to the Tor network.<\/p>\n\n\n\n

On Android, Tor Browser 16.0 continues the transition to Jetpack Compose<\/strong> and Material Design 3<\/strong>. Large parts of the interface have been updated to the modern native framework, with more changes planned for future releases. The team also had to carefully compress built-in resources to stay under Google Play\u2019s 100 MB APK limit<\/strong>, an ongoing constraint as Firefox for Android grows.<\/p>\n\n\n\n

Under the hood, the release ships with updated core components: Tor 0.4.9.15<\/strong> and NoScript 13.6.37.1984<\/strong>, along with a long list of bug fixes and security-related adjustments.<\/p>\n\n\n\n

What\u2019s next?<\/h2>\n\n\n\n

According to the Tor Project, users can expect further refinements to the new desktop Settings experience and the Android Material Design 3 interface in the coming months. A new circuit display is also being developed for Tor Browser Alpha. It will integrate site information directly into the circuit panel and visualize complex multi-path circuits<\/strong> that split traffic across additional relays. This feature will eventually be available on Android as well, where it has been absent until now.<\/p>\n\n\n\n

The stable 16.0 release is the recommended upgrade path for anyone who needs strong anonymity, especially for ARM64 Linux users who have been waiting for a stable, native build. The redesign is not just cosmetic; it reorganizes privacy controls, warns about risky settings, and closes a local window-title leak that most browsers still leave open.<\/p>\n","protected":false},"excerpt":{"rendered":"

The Tor Project has released Tor Browser 16.0, the first stable version built on Firefox ESR 153. This release is more than a routine update: it brings a completely redesigned settings interface, a new opt-in privacy feature called generic window titles, native ARM64 support for Linux, and a revamped offline manual. For users who rely…<\/p>\n","protected":false},"author":1,"featured_media":954,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,9],"tags":[],"class_list":["post-953","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-privacy"],"_links":{"self":[{"href":"https:\/\/www.rh-itsec.com\/blog\/wp-json\/wp\/v2\/posts\/953","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.rh-itsec.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.rh-itsec.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.rh-itsec.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.rh-itsec.com\/blog\/wp-json\/wp\/v2\/comments?post=953"}],"version-history":[{"count":1,"href":"https:\/\/www.rh-itsec.com\/blog\/wp-json\/wp\/v2\/posts\/953\/revisions"}],"predecessor-version":[{"id":955,"href":"https:\/\/www.rh-itsec.com\/blog\/wp-json\/wp\/v2\/posts\/953\/revisions\/955"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.rh-itsec.com\/blog\/wp-json\/wp\/v2\/media\/954"}],"wp:attachment":[{"href":"https:\/\/www.rh-itsec.com\/blog\/wp-json\/wp\/v2\/media?parent=953"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.rh-itsec.com\/blog\/wp-json\/wp\/v2\/categories?post=953"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.rh-itsec.com\/blog\/wp-json\/wp\/v2\/tags?post=953"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}