The Marvellous Suspender

Free plan Extension

Visit The Marvellous Suspender Alternatives Pricing

What The Marvellous Suspender is

The Marvellous Suspender is a free browser extension that suspends inactive tabs to release the memory and CPU resources they use. Suspended tabs can appear as screenshots, blurred pages or text-only views. The extension can recover tabs after a browser crash or restart, and Power Mode can suspend them automatically when the battery falls below a chosen threshold.

Session Management stores windows, tabs, tab groups and pinned state locally, with current, recent and saved sessions plus migration. Optional scheduled backups can be kept locally or in Google Drive; users set the interval and can keep 2 to 50 backups per device. Drive backups use an app-specific hidden folder and do not pass through the maker’s servers. The maker says settings and session data remain in the browser profile and that it does not collect, transmit or sell user data. Chrome 110 or later is required. The maker reports active users on Vivaldi, Brave and Microsoft Edge, but installation and policy support vary by browser. The code is publicly available under the GNU General Public License v2.

Who it suits

It is intended for people who keep many browser tabs open and want to reduce Chrome’s memory use. Its session recovery and optional backups may also suit people who want to preserve tab arrangements.

What it does well

Suspends inactive tabs to free memory and CPU resources.
Can recover tabs after crashes or restarts.
Power Mode responds to a chosen battery threshold.
Session data and settings are stored locally.

What to know first

Requires Chrome 110 or later.
Browser installation and policy support can vary.
No dedicated commercial support channel.

Plans

Plan	Billed and limits	Price
Free	Free of charge; no ads; no user data collection	Free

As github.com lists them, read 8 Oct 2026. The maker's own page has the final word.

Verdict

The Marvellous Suspender combines tab suspension with session recovery and optional backups. Check browser compatibility first, especially if you use a browser other than Chrome.

Facts from The Marvellous Suspender's own pages

Backups: Optional scheduled session backups can be saved locally or to Google Drive, with a configurable interval and a limit of 2 to 50 backups per device. · kb.marvellouscode.works, 8 Oct 2026
Battery mode: Power Mode automatically suspends tabs when the battery drops below a chosen threshold. · marvellouscode.works, 8 Oct 2026
Google Drive scope: Drive backups use the narrow drive.appdata scope to access the app-specific hidden folder, and backup files do not pass through Marvellous Codeworks servers. · kb.marvellouscode.works, 8 Oct 2026
License: The code is publicly available under the GNU General Public License v2. · kb.marvellouscode.works, 8 Oct 2026
Notable limit: The extension requires Chrome 110 or later because it uses Manifest V3. · kb.marvellouscode.works, 8 Oct 2026
Optional permissions: Downloads and Google identity permissions are requested only when the user enables local backups or connects Google Drive. · kb.marvellouscode.works, 8 Oct 2026
Privacy: The maker says TMS does not collect, transmit, or sell user data; settings and session data are stored locally in the browser profile. · kb.marvellouscode.works, 8 Oct 2026
Purpose: The extension suspends inactive tabs to free the memory and CPU resources they were using. · github.com, 8 Oct 2026
Session management: Session Management records open windows, tabs, tab groups, and pinned state locally, and includes current, recent, and saved sessions plus migration. · kb.marvellouscode.works, 8 Oct 2026
Session recovery: The extension can recover suspended tabs after a browser crash or restart. · marvellouscode.works, 8 Oct 2026
Support: Users can seek help through the project’s GitHub repositories; the maker says there is no dedicated commercial support channel. · kb.marvellouscode.works, 8 Oct 2026
Supported browsers: Chrome 110 or later is required; the maker reports active users on Vivaldi, Brave, and Microsoft Edge, with installation and policy support varying by browser. · kb.marvellouscode.works, 8 Oct 2026
Suspended tabs: Users can choose screenshot, blurred, or text-only appearances for suspended tabs. · marvellouscode.works, 8 Oct 2026
Target users: The project is intended for people who keep multiple browser tabs open and want to reduce Chrome’s memory use. · kb.marvellouscode.works, 8 Oct 2026

Where The Marvellous Suspender stands on Freedom251

Tab Management Software#26 of 27