Tab Suspender Extensions for Chrome: Memory Saver, Safer Picks and the Great Suspender Lesson

Do you still need a tab suspender extension in Chrome?

Probably not, if your goal is simply to stop dozens of background tabs eating RAM. Chrome's Memory Saver does that job without installing anything, and it cannot be sold to a stranger the way a third-party extension can.

A suspender extension still earns its place in a few cases. You might want a fixed timer, such as 'suspend after 20 minutes', rather than Chrome deciding when memory is tight. You might want a keyboard shortcut that suspends every tab except the current one, or rules that skip pinned tabs and specific domains in more detail than Chrome allows.

• Use Memory Saver alone if you keep 10 to 50 tabs open and just want a responsive laptop.
• Add a suspender if you want predictable timers, bulk suspend commands or a whitelist by URL pattern.
• Close and save instead if most of those tabs are reading you will not get to this week; a session saver frees the memory entirely.
• Avoid any suspender on a managed work Chromebook unless IT approves it; policies may block it anyway.

The rest of this guide walks through each route, starting with the free one that is already in your browser. If you are also trying to organise the tabs themselves, our tab manager directory covers groupers, searchers and session tools.

How do you turn on Chrome's Memory Saver?

Memory Saver lives in the Performance section of Chrome settings on Windows, macOS, Linux and ChromeOS. When it is on, Chrome deactivates tabs you have not used for a while and reloads them when you click back.

1. Open the three-dot menu → Settings → Performance, or paste chrome://settings/performance into the address bar.
2. Under Memory, switch on Memory Saver.
3. Choose how aggressive it should be. Recent versions offer Moderate, Balanced and Maximum; the higher settings deactivate tabs sooner.
4. Next to Always keep these sites active, click Add and enter domains that must never unload, such as a chat app, a music player or a dashboard you watch.
5. Leave the page. There is no save button; changes apply immediately.

Labels move between Chrome releases, so if a name differs slightly on your build, look for the same toggle under Performance. Google documents the current options on its Chrome performance help page.

Memory Saver vs a tab suspender: what is the difference?

Both unload a tab from memory while keeping it in your tab strip. The difference is who decides when, and how the tab is stored while it sleeps.

The placeholder approach dates from before Chrome had a proper discard feature. It works, but each suspended tab points at a page inside the extension. Uninstall or disable that extension and those tabs have nothing to load, which is exactly what bit people in 2021.

Native-discard extensions call Chrome's own discard mechanism, the same one Memory Saver uses, so the tab keeps its real URL the whole time.

What happened to The Great Suspender?

The Great Suspender was the most popular Chrome tab suspender for years, until its original developer handed it to a new, unknown owner in 2020. Later versions added code that could load remote scripts, and in February 2021 Google removed it from the Web Store and disabled it on users' computers as malware.

Because it used the placeholder-page approach, the forced removal left many people with windows full of suspended tabs pointing at an extension that no longer existed. Some recovered their URLs from Chrome history; others lost sessions they had kept for months.

The lesson reaches beyond this one tool. An extension with broad tab access can change hands quietly, and the new owner inherits every install. That is why we weigh ownership changes and update history in our review methodology, and why a built-in feature beats an extension when both do the same job.

If you want to see how the owner of any extension can change what it may access, our guide to Chrome extension permissions explains each warning in plain terms.

Which tab suspender extensions are safe to use now?

The two names most people move to are Auto Tab Discard and The Marvellous Suspender. Both are open source, which means anyone can inspect changes, but open source alone is not a guarantee; check who publishes the Web Store listing.

Auto Tab Discard

Uses Chrome's native discard, so tabs keep their real URL. Offers timers, a whitelist, options to skip pinned or audio-playing tabs, and right-click commands. Source on GitHub.

The Marvellous Suspender

A cleaned-up, open-source fork of the original Great Suspender code, according to its README. Familiar interface for former users, but it still uses placeholder pages, so keep a session backup. Source on GitHub.

Use the checklist below as your own due diligence before installing any suspender, including the ones above.

• The Web Store listing links to a public source repository with recent commits.
• The publisher name matches the repository owner.
• It asks for tab access, not 'Read and change all your data on all websites', unless it explains why.
• It stores suspended tabs using native discard, or offers an export so you can recover URLs.
• Reviews from the last few months do not mention sudden ownership changes or new pop-ups.

How do you suspend a tab manually without an extension?

Chrome has a hidden page, chrome://discards, that lists every tab and lets you unload any of them on demand. It is meant for developers, but it is the quickest way to free memory from one heavy tab without closing it.

1. Type chrome://discards in the address bar and press Enter.
2. Find the tab in the Discards table. Columns show its title, visibility and whether it can be auto-discarded.
3. Click Urgent Discard (or Discard) in that row. The tab stays in your strip but unloads.
4. To protect a tab from Memory Saver, untick its Auto Discardable toggle on the same page. This resets when the tab closes.

To find which tabs deserve it, open Chrome's Task Manager: press Shift+Esc on Windows and ChromeOS, or use the three-dot menu → More tools → Task manager on Mac. Sort by the Memory footprint column and unload the top offenders first.

Should you save and close tabs instead of suspending them?

Often, yes. A suspended tab still costs a little memory and a lot of attention, while a saved-and-closed tab costs nothing until you reopen it. If a tab has been sleeping for a week, it belongs in a list, not your tab strip.

For a step-by-step comparison of methods, including Chrome's own bookmark-all-tabs shortcut, read how to save all open tabs in Chrome for later. If you already run many extensions, a tidy-up with one of the Chrome extension managers can free more memory than any suspender.

Why do suspended tabs reload, lose data or refuse to sleep?

A discarded tab is a fresh page load when you return, so anything the page did not save to the server is gone. Most complaints trace back to that, or to Chrome's own exceptions for tabs it considers busy.

• Half-filled forms vanish. Chrome tries not to discard tabs with unsent form input, but extensions on a timer may not check. Submit or copy text before stepping away.
• A video starts over. Streaming sites vary in whether they remember your position; many do when you are signed in.
• Tabs never unload. Pages playing audio or video, sharing your screen, or on your always-active list are skipped. Check each of those first.
• Everything reloads at once after restart. That is Chrome restoring the session, not the suspender; tabs will unload again once idle.
• Suspended placeholder tabs show an error page. The suspender was disabled or updated. Re-enable it at chrome://extensions, or copy the original URL from the placeholder page's address.

On Android and iPhone none of this applies in the same way: mobile Chrome has no extensions and the operating system unloads background tabs on its own. Tab suspenders are a desktop and Chromebook tool only.