Chrome Memory Saver: What It Does, and Should You Turn It On?

Chrome Memory Saver is the switch that decides whether your old tabs keep holding memory. Turn it on and Chrome puts tabs you have not used for a while to sleep, gives their memory back to your computer, and reloads them when you click. Leave it off and every open tab keeps its page loaded until you close it.

This guide explains what Memory Saver actually does, which tabs it never touches, and how to decide whether it belongs on for you. If Chrome is already eating your RAM right now, start with our full guide to Chrome using too much memory.

The short answer#

• Turn it on if you keep more than about ten tabs open or your computer has 8 GB of memory or less.
• It does not close tabs. Sleeping tabs stay in the tab strip and reload when clicked.
• Some tabs never sleep: playing audio or video, pinned tabs, downloads, half-filled forms, screen sharing.
• Pick Balanced first. Move to Maximum only if you still run out of memory.

What we measured on a Mac#

Tested on a MacBook Pro (M1 Pro) with 16 GB of RAM, macOS 26.3, Chromium 153 (the open-source build Chrome is made from, used because branded Chrome no longer loads test extensions from the command line), October 21, 2026. Memory Saver frees memory by discarding tabs you are not using. To see what that is worth, we opened ten real sites and then discarded the nine in the background. Memory is the total footprint of every Chrome process in a fresh test profile, read with macOS's footprint tool.

That is about 2.8 GB back, close to 300 MB for each tab. The tabs stay in your tab strip and reload when you click them. On a 16 GB Mac that is the difference between swapping and not.

What Chrome Memory Saver does#

Every open tab in Chrome normally keeps its whole page in memory: the page itself, its scripts, its images and whatever data the site loaded. That is why a tab you opened on Monday can still cost memory on Friday.

Memory Saver changes that. When a tab has been idle for a while, Chrome deactivates it. In Chrome's own terms the tab is discarded: its page is thrown out of memory, but the tab stays in your tab strip with its title and icon. When you click it, the page loads again from the network or from the cache.

When Google launched the feature in December 2022, it said Chrome could use "up to 40% and 10GB less memory" with it. That figure depends heavily on how many tabs you keep, so treat it as a ceiling, not a promise. With three tabs open, Memory Saver has almost nothing to free. With sixty, it can free a lot.

What you notice day to day:

• Old tabs take a second to come back when you click them.
• Scroll position usually comes back. Anything the page kept only in memory, such as an unsent chat message in some apps, may not.
• Turn on Inactive tabs appearance to see which tabs are asleep: their icon gets a ring around it.

How to turn Memory Saver on or off#

1. Open the three-dot menu at the top right of Chrome.
2. Choose Settings, then Performance in the left column. Or type chrome://settings/performance in the address bar.
3. Switch Memory Saver on or off.
4. Under it, pick a level: Moderate, Balanced or Maximum.
5. Optionally turn on Inactive tabs appearance.

The change applies right away. You do not need to restart Chrome.

Moderate, Balanced or Maximum#

Google describes the three levels in plain terms and does not publish minute counts:

Start with Balanced. If the computer still slows down with your usual tabs, move to Maximum. If tabs you switch to often keep reloading, move down to Moderate. We compare the two most common choices in detail in Memory Saver Balanced vs Maximum.

Tabs Memory Saver never touches#

Google's help page lists the activities that keep a tab active. A tab is not deactivated while it is:

• playing audio or video
• sharing your screen
• showing page notifications
• running an active download
• holding a partly filled form
• pinned
• connected to a USB or Bluetooth device

On top of that, you can protect whole sites. Under Always keep these sites active, select Add, then either Add current sites from your open tabs or Add sites manually. A plain domain such as mail.google.com covers that site; Google's page explains the exact patterns, including wildcards.

Good candidates for the list: your work chat, a music site you leave running in the background, a dashboard you glance at all day, and any web app where you write long text before saving.

Should you turn Chrome Memory Saver on?#

Yes, if any of these sound like you:

• You keep more than ten tabs open most of the day.
• Your Mac or PC has 8 GB of memory or less.
• The fan spins up, typing lags or other apps freeze when Chrome is open.
• You leave Chrome running for days without restarting it.

Leave it off, or on Moderate, if:

• You constantly jump between a dozen tabs and every reload costs you work.
• Your sites are slow to load or behind a slow VPN, so a reload takes many seconds.
• Your computer has plenty of memory and rarely shows memory pressure.

There is no harm in trying it for a week. If it annoys you, the switch is one click away.

Memory Saver vs a tab-sleeping extension#

Memory Saver is free, built in and good enough for many people. Its limits are about control:

• You cannot choose an exact time, such as "sleep after 30 minutes".
• It does not close duplicate tabs or show you which tab is heaviest.
• It is per profile, so you set it in each Chrome profile.

Extensions use the same mechanism. Chrome gives them a tabs.discard feature that frees a tab's memory while keeping it in the tab strip, exactly like Memory Saver. What they add is rules.

That is one of the reasons we built Cleaner. Cleaner Pro puts tabs to sleep after 30 minutes without use and never touches the tab you are on, pinned tabs or the sites you protect. It also closes duplicate tabs in one click. The free version has a Tab Manager side panel that sorts open tabs by estimated memory, so you can see which one to close first. Pro is a one-time payment of $19.99 for up to three browsers. You can run Memory Saver and Cleaner together; a tab that is already asleep simply stays asleep.

For a wider look at the options, see our guide to the best Great Suspender alternatives.

Common Memory Saver problems#

A tab I need keeps reloading. Add the site under Always keep these sites active, or pin the tab.

Memory Saver is on but Chrome still uses lots of memory. Sleeping tabs only help with tabs. Extensions, the GPU process and the tab you are using are not affected. Open Chrome's task manager to see what is left, as shown in Chrome Memory Saver not working.

The setting is gray. Your school or company manages the browser through a policy. Only the administrator can change it.

The bottom line#

Turn Memory Saver on, set it to Balanced, protect the two or three sites you never want reloaded, and turn on the inactive tab ring so you can see it working. That covers most people. If you want fixed timings, duplicate cleanup and a list of the heaviest tabs, add an extension on top; if Chrome is still slow after that, the cause is probably not your tabs, and our guide on why Chrome is so slow walks through the rest.