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Fix a browser that uses too much memory

We'll find heavy tabs and extensions, close or disable them, and adjust settings so the browser uses less memory.

Troubleshooting · Home maintenance
10–20 min
What you'll need
  • Computer with the browser installed
  • Task Manager or Activity Monitor access
Step 1 of 7

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Choose the option that matches what you see. You can jump straight to that section.

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Steps

Goal: Find heavy tabs and extensions, close or disable them, and adjust settings.

  • Open Task Manager (Windows: Ctrl+Shift+Esc) or Chrome Task Manager (Shift+Esc).
  • Good: The browser uses a lot of memory. Proceed to Close tabs.
  • Bad: Memory is normal—different problem (network, CPU).

Close tabs

Goal: Reduce memory by closing unused tabs.

  • Each tab uses memory. Close tabs you are not using.
  • If you have 20 or more tabs, close half and check if the browser speeds up.
  • Good: Memory dropped and the browser is faster.
  • Bad: Still high. Proceed to Task Manager.

Task Manager

Goal: Find which tab or extension uses the most memory.

  • Chrome: press Shift+Esc. Edge: Menu > More tools > Task manager.
  • Sort by “Memory footprint.” Close heavy tabs first.
  • If an extension uses a lot of memory, consider disabling it.
  • Good: Memory dropped after closing heavy tabs or extensions.
  • Bad: Still high. Proceed to Disable extensions.

Disable extensions

Goal: Turn off memory-hungry extensions.

  • Chrome: chrome://extensions. Firefox: about:addons. Edge: edge://extensions.
  • Ad blockers, password managers, and translation extensions often use hundreds of megabytes.
  • Disable extensions you do not need. Test with half disabled.
  • Good: Memory dropped.
  • Bad: Still high. Turn off hardware acceleration, clear cache, restart.

Clear cache and restart

Goal: Free memory from cache and background processes.

  • Clear cache: chrome://settings/clearBrowserData, select Cached images and files.
  • Turn off “Continue running background apps when closed” (Chrome/Edge).
  • Restart the browser completely.
  • Good: Memory dropped to normal.
  • Bad: Still high with few tabs. Check total RAM; consider reinstalling.

When to get help

If the browser uses several gigabytes with only a few tabs and no heavy extensions, the computer may have too little RAM. Check total RAM (8 GB is minimum for modern browsing). If you have 16 GB or more and the browser still uses excessive memory, consider reinstalling the browser or checking for malware.

Verification

  • Browser memory in Task Manager is at a reasonable level (under 2 GB for typical use).
  • Browser responds quickly; no freezing or “out of memory” errors.
  • Tabs load and scroll normally.

Escalation ladder

Work from the device outward. Stop when the problem is fixed.

  1. Close tabs Close unused tabs; each tab uses memory.
  2. Task Manager Find heavy tabs and extensions; close or disable them.
  3. Disable extensions Turn off memory-hungry extensions (ad blockers, password managers).
  4. Clear cache and restart Clear cache, turn off background processes, restart the browser.
  5. Get help If memory stays high with few tabs, check RAM or consider reinstalling.

What to capture if you need help

Before calling support or posting for help, have these ready. It speeds everything up.

  • Number of tabs open
  • Extensions installed
  • Memory use from Task Manager
  • Steps already tried

Is the browser slow or showing high memory?

Check Task Manager or the browser built-in Task Manager. High memory can cause slowness or "out of memory" errors.

Open Task Manager (Windows: Ctrl+Shift+Esc; Chrome: Shift+Esc). Find the browser. Good: browser uses a lot of memory. Bad: memory is normal—different problem.

Yes No

You can change your answer later.

Do you have many tabs open?

Each tab uses memory. Closing tabs frees memory quickly.

Close unused tabs. If you have 20 or more, close half. Good: memory dropped and browser is faster. Bad: still high—check Task Manager for heavy tabs or extensions.

Yes, helped No or still high

You can change your answer later.

Which tab or extension uses the most memory?

Chrome: Shift+Esc. Edge: Menu > Task manager. Sort by memory footprint.

Open the browser Task Manager. Sort by memory. Close heavy tabs. If an extension uses a lot, disable it. Good: memory dropped. Bad: still high—disable more extensions or clear cache.

Yes No

You can change your answer later.

Do you have extensions installed?

Ad blockers, password managers, and translation extensions can use hundreds of megabytes.

Chrome: chrome://extensions. Firefox: about:addons. Edge: edge://extensions. Disable extensions you do not need. Good: memory dropped. Bad: still high—turn off hardware acceleration, clear cache, restart.

Yes No

You can change your answer later.

Restart and clear cache

Clear cache (chrome://settings/clearBrowserData). Turn off "Continue running background apps when closed." Restart the browser. If memory stays high with few tabs, check total RAM or consider reinstalling.

Done

Memory use resolved

Memory is now at a normal level. Continue with fewer tabs or lighter extensions.

Done

Get help

If memory is normal but the browser is slow, the problem may be network, CPU, or disk. Check other guides for those issues.

Done

Reviewed by Blackbox Atlas

Frequently asked questions

Why does my browser use so much memory?
Too many tabs, extensions (ad blockers, password managers), or memory leaks from long sessions. Each tab runs separately; 50 tabs can use several gigabytes. Check Task Manager to see which tabs or extensions use the most.
How do I see which tab uses the most memory?
Chrome: press Shift+Esc to open the built-in Task Manager. Sort by "Memory footprint" to find heavy tabs or extensions. Close the heavy ones. Edge has a similar Task Manager in the menu.
Will disabling extensions free memory?
Yes. Extensions run in the background and use memory. Ad blockers, password managers, and translation extensions can use hundreds of megabytes. Disable ones you do not need.

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