Available Firefox 136 with support for vertically placed tabs, AI chatbots, automatic conversion of HTTP requests to HTTPS, and support for VA-API on AMD graphics cards.
- Linux:
- Enabled hardware acceleration for video decoding (VA-API) on systems with AMD GPUs (requires Mesa version 24.2 or newer).
- Official builds for ARM64 (AArch64) architecture are available as tarballs, as well as from the APT repository. Flatpak builds are on the way.
- Configured the about:processes page works on FreeBSD (previously it only worked on OpenBSD).
- In settings a new feature has emerged there's an option to enable a new implementation of the sidebar:
- In the sidebar settings (gear icon), the option for vertical tab placement (additionally, tab placement can be switched by right-clicking the toolbar and selecting the corresponding menu item).
- In the sidebar are AI-based chatbots. Supported online services include Anthropic Claude, ChatGPT, Google Gemini, Hugging Chat, and Le Chat Mistral.
- Enabled by default, the engine HTTPS-First: when navigating or entering a URL, as well as loading child resources over HTTP, Firefox will first attempt to connect via secure HTTPS and transparently fall back to unsecured HTTP if any issues are detected. The upgrade does not apply if a non-standard port or local address is specified.
- The user data clearing dialog now allows for the deletion of form history without completely removing browser history.
- Now includes the ability to selectively disable blocking of embedded social media widgets on web pages, which are blocked in strict tracking protection mode or private browsing mode.
- In telemetry settings has added the option 'Send daily usage ping to Mozilla', allowing developers to more accurately gauge the number of active users.
- Pages returning error codes (4xx, 5xx) and having a zero length will no longer won't be be displayed as empty. Instead, an error message will be shown to help the user better understand what happened.
- When connecting over unsecured HTTP, in addition to the icon of a crossed-out padlock in the address bar, the message 'Not Secure' is now displayed (security.insecure_connection_text.enabled).
- Shortcuts for recently visited sites on the new tab page now are generated based on page titles rather than domain names.
- For security reasons, background tabs are prohibited from opening the file selection dialog.
- Now includes the ability to disable basic HTTP authentication (network.http.basic_http_auth.enabled).
- In the browser interface are prohibited use built-in event handlers (security.browser_xhtml_csp.enabled = false). This may break, for example, some user scripts; such scripts must be rewritten.
- Users from Mexico, Brazil, Argentina, and Chile now have access to the weather summary on the new tab page.
- Users from the United Kingdom can now autofill addresses in web forms.
- macOS:
- Some background tasks are now automatically moved to energy-efficient processor cores.
- Implemented hardware acceleration for HEVC video playback.
- DMG format installation packages now are compressed using the LZMA algorithm, reducing their size and installation time.
- Due to changes in macOS Sequoia, the keyboard shortcut that adds .com to the address entered in the address bar has changed from Ctrl+Enter to Cmd+Enter.
- Windows: When copying an image to the clipboard (where it is placed in the clipboard as both a file and an image) by default, the image now is placed in PNG format. Thus, if the receiving application supports receiving PNG images from the clipboard, it will receive the image without losing transparency (applications that do not know how to accept PNG can still request a BMP image from the clipboard).
- HTML:
- Now includes support for the global attribute autocorrect (includes automatic spell correction in editable text elements: most text elements does not support, elements
