The Marvellous Suspender 8.0.0.0 — Manifest V3
The biggest TMS update in years: a complete rewrite to Manifest V3. After a long wait and a lot of work by the community, the extension is now fully compatible with the modern Chrome extension platform.
What's changed
Manifest V3 migration
The entire background processing layer has been rewritten as a service worker (background.js), replacing the persistent background page required by Manifest V2. This brings TMS in line with Google's current extension requirements and ensures continued availability on the Chrome Web Store.
New and changed permissions
The permission set has been updated to match what Manifest V3 requires and allows:
| Permission | Why |
|---|---|
alarms | Replaces setTimeout for scheduling suspension — service workers cannot use timers across restarts |
favicon | Replaces the deprecated chrome://favicon/* pattern |
scripting | Replaces content scripts for detecting unsaved forms and scroll position |
tabGroups | Enables saving and restoring tab group assignments |
host_permissions (http://*/*, https://*/*) | Required for the scripting API |
The cookies permission has been removed (scroll position migration from older versions is no longer needed).
Other improvements
- Sanity checks added across tab logic to handle edge cases more gracefully
- Tab group data is now included in session recovery storage
- SVG page fix:
document.bodyis no longer accessed on SVG tabs, preventing a TypeError - Various localization updates via Crowdin
Minimum Chrome version
TMS 8.x requires Chrome 110 or later.
Full changelog on GitHub: 8.0.0.0 release