Mozilla released Firefox 158 with native JPEG XL image support, sub-pixel scrolling accuracy, and SkPDF integration for PDF generation on Linux and macOS.
The release also includes Android tab bar customization and a fix for WebSocket message tracking in the Network Monitor.
The most significant change is the built-in support for JPEG XL images. The new image format offers better compression, supports transparency, animation, and high dynamic range, and also allows conversion of older JPEG files. Users can now view such images directly in the browser, without the need for additional settings.
Better PDF management and smoother scrolling
The new version changes the way PDF files are created on Linux and macOS computers, making documents more accessible and improving their appearance.
At the same time, scrolling on web pages is now more precise, as the limitation that limited movements to whole pixels has been removed. This is especially helpful on high-resolution screens and when the user is zooming.
New personalization options and conveniences
On the new tab page, the browser now stores a collection of previous wallpapers in the “Your images” section so they are easily accessible.
When it comes to filling out forms, the browser can suggest relevant information from open tabs and saved data. Mozilla clarifies, however, that this feature is being gradually rolled out to users.
On Android, users can now choose whether the tab bar is at the top or bottom of the screen through the personalization settings. On Windows, menus work better with high-contrast themes, allowing control over background and text colors. Finally, an issue in developer tools where network monitoring was missing messages that arrived immediately after a connection was established has been fixed.
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