Zen Browser 1.24.2b

Zen Stable Release

Security

• https://www.mozilla.org/en-US/security/advisories/mfsa2026-125/

New Features

• Updated to Firefox 160.0
• Added pause context menu button for the downloads section
• The urlbar now has a bit of transparency for a more modern look.
• The Picture-in-Picture player now has a playback speed setting, with options ranging from 0.25x to 2.0x speed. The setting appears only when the player window is medium-sized or larger.
• Pages saved as PDF now make mathematical content (MathML) accessible to assistive technology such as screen readers.
• Websites that repeatedly ask to handle email (mailto:) and other links can now be blocked with a new “Never allow” button, and blocked sites can be managed in Settings.
• Zen now plays Matroska (MKV) files with FLAC, MP3, or PCM audio.
• WebGL content on macOS is now rendered using Apple's Metal graphics API, which can improve performance on some sites.

Fixes

• Improved performance for boosts color tinting.
• Fixed the first character typed into the address bar or search bar sometimes being lost when typing quickly right after clicking into it.
• Fixed Zen freezing for several seconds when signing in to intranet sites that use NTLM or Kerberos (Negotiate) authentication.
• Fixed double-tapping or long-pressing a word to select it, and tapping to place the cursor, not working near the cursor in text fields.
• Fixed links opened in the background from other apps on macOS, such as RSS readers, bringing Zen to the foreground.
• Fixed downloaded files on macOS sometimes opening in the wrong application instead of the default one set in Finder.
• Fixed simultaneous downloads on macOS never finishing when Zen is set to ask where to save files. Only the first file showed a save dialog.
• Restored meaningful filenames and the usual save workflow for PDFs opened in Preview from the macOS print dialog.
• More bug fixes and improvements.

Changes

• The address bar context menu now shows "Paste and Search" instead of "Paste and Go" when the copied text is a search term rather than a web address.