Mozilla has released Firefox 137, an update for its open-source web browser, ahead of the official release date of April 1, 2025. This version brings several new features and enhancements, particularly for Linux users.
One significant addition is support for HEVC playback on Linux systems, enhancing the ability to play high-efficiency video codec files. Moreover, Firefox 137 improves PDF handling by allowing users to identify and convert all links within PDF documents into clickable hyperlinks. It also now supports digital signatures for PDFs, enabling users to sign documents without leaving the browser.
Additionally, a new feature lets users use the address bar as a calculator. By simply typing an arithmetic expression, users can see the result in a drop-down menu. However, this feature is being rolled out gradually, so not all users may access it immediately.
The update also introduces layout options in the Browser Layout settings, enabling users to toggle between horizontal and vertical tab layouts, alongside the sidebar feature that debuted in Firefox 136.
For web developers, Firefox 137 enhances the Inspector Fonts panel with detailed metadata about fonts, updates the Network panel for better management of request responses, and adds support for the SVG 2 path API and the hyphenate-limit-chars property.
Firefox 137 is now available for download for various Linux architectures, including 32-bit, 64-bit, and AArch64 (ARM64) from Mozilla’s FTP server, and will officially be released as an Over-the-Air update for macOS and Windows users tomorrow.
For more details on the release, visit Firefox 137.