Zen Browser 1.22.1b Drops With Cross-Device Sync and Shareable Workspace Links
The long wait for true workspace continuity is finally over. Zen Browser 1.22.1b, riding on Firefox 155.0 as its underlying engine. Maintainer mr-cheffy pushed commit 22961e9 just eight days after the major 1.22b release, and the patch wraps up two pipeline pieces the team has been building toward all month.
If you haven't updated yet, you'll get a 17-asset download page with installers and AppImages ranging from 92.3 MB on Linux ARM64 to 157 MB on macOS. The build ships with Mozilla's MFSA2026-82 security fixes baked in from the previous major release.
What's Actually New
The headline change is cross-device Spaces sync for normal tabs. Before this patch, Firefox's native sync handled bookmarks and passwords, but your custom Zen workspaces stayed stuck on whichever machine you built them on. You can now flip Settings => Sync => "Sync your Spaces across devices" and watch your workspaces, folders, and open tabs follow you to a laptop or a secondary desktop. It's opt-in by default, which keeps the feature from cluttering accounts that don't use it.
Zen also introduced shareable links for Spaces, folders, and split views. Right-click any of those, generate a link, and drop it in a chat or email. The catch, which is actually a benefit here, is that the recipient doesn't need Zen. Whether they're running Chrome, Firefox, or Safari, the link opens their browser to the exact tab layout you built. It's a quick pivot from personal organization into something that actually functions as a team tool. Researchers, dev teams, and anyone tired of copy-pasting forty URLs into Slack will appreciate the work saved.
Scrolling and video playback both got tuned up in this build. Zen's custom compositor and UI layering have historically eaten a few frames during heavy page loads, and the changes here seem to smooth that out. Battery drain during video playback also took a hit in a good way. Not bad for a patch that doesn't touch the core browser engine.
Six months into the Firefox 155 cycle, the performance work here feels like a natural catch-up rather than a marketing push. The Android app remains the number one requested feature on the issue tracker, sitting at 69 upvotes on the dedicated thread. No date, no roadmap, nothing. Zen's desktop experience keeps getting sharper, but until mobile arrives, your sync workflow is still pinned to a keyboard and a trackpad.
Head here to grab the installers and AppImages directly from the official GitHub releases page. The source archives are bundled alongside them if you want to compile your own build. Keep an eye on the release notes for 1.22.2b, which typically lands within a week if a critical fix surfaces.
