Zen Browser
Zen Browser 1.21.10b is a Firefox-based workspace browser with split views, vertical tabs, compact mode and extension support. This page covers Windows, macOS and Linux installation and configuration migration.
What Zen Browser provides
Zen Browser organizes projects through workspaces, vertical tabs, split views and compact layouts while retaining compatibility with many Firefox extensions. These features help arrange pages, but they do not automatically isolate accounts or cookies.
Migration and permissions
Import bookmarks first, then add extensions one by one and review page, download, clipboard and host permissions. Save the browser profile and extension list before upgrades so a layout or sign-in issue has a known recovery path.
Maintenance note
This page reviews Zen Browser 1.21.10b for Windows, macOS universal and Linux x64, including workspaces, vertical tabs, split views, extensions and configuration migration. Content review date: 2026-08-23.
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Zen Browser 1.21.10b workspaces, tabs and split-view guide
Start with an isolated profile, verify the version and layout, then import bookmarks and extensions before creating a long-term workspace structure.
Before you start
- Select the Windows, macOS universal or Linux x64 package and reserve space for profile data and cache.
- Export bookmarks, record the extension list and keep passwords and recovery information separate.
- Plan workspaces for projects, study and daily browsing so accounts do not become mixed on a shared device.
Installation steps
- 01
Install the platform package
Use the Windows EXE, macOS universal DMG or Linux x64 AppImage, then verify the version, language and update channel.
- 02
Configure tabs and split views
Set vertical tabs, compact mode and the home page, then test split view, pinned tabs and window restoration with two real tasks.
- 03
Migrate bookmarks and extensions
Import bookmarks first, then install extensions one by one and inspect page, download and host permissions before moving passwords.
Quick start
- 01
Define workspace names
Name workspaces by project or task, pin stable entry points, and close temporary tabs when the work is finished.
- 02
Review site permissions
Check cookies, notifications, camera, microphone and clipboard permissions, using a temporary site exception when possible.
- 03
Save a pre-upgrade copy
Back up bookmarks, the extension list and important profile data before an upgrade, and verify that recovery information works.
Usage tips
- Workspaces and split views organize pages but do not guarantee account isolation; use separate profiles for sensitive tasks.
- Extensions may read pages, downloads, the clipboard and host data. Keep only required extensions and review their update source.
- Clearing cookies, history or cache can remove sign-in state, so confirm the recovery path before cleanup.
Troubleshooting and uninstall
Why does split view show a broken layout?
Check zoom, responsive layout and site permissions, then reproduce in a normal tab. If one extension triggers it, disable extensions and restore them one at a time.
Why did a migrated account disappear?
Check the active profile and workspace, then restore the saved profile or sign in again. A workspace is not a substitute for a separate browser profile.
- Export the profile essentialsSave bookmarks, extension names, settings and recovery information, and confirm that required accounts can be restored.
- Remove the browser after backupSign out where appropriate, uninstall through the operating system, and remove cache or profile data only after the backup has been checked.
Frequently asked questions
Can Zen Browser install Firefox extensions?
Many compatible Firefox extensions can be installed, but source, signing, updates and requested permissions should be checked individually.
Do workspaces isolate cookies?
Workspaces mainly organize tabs and windows. Cookie and login separation depends on the browser profile and configuration, so test separate profiles for strict isolation.
Is Zen Browser suitable for sensitive accounts?
Use a dedicated profile or device, keep extensions minimal, review permissions and preserve a recovery copy before changing the browser configuration.