Pages take ages to load, typing lags, and your laptop fan won’t stop spinning. Your internet might be fine. The culprit could be one of your browser extensions.
Extensions run on top of every page you open, so a single badly built one can slow everything down. Here’s how to find it in a few minutes and fix it.
Signs an Extension Is the Problem
- Your browser was fast until you installed something new.
- Every website feels slow, not just one.
- Your browser uses a lot of memory even with only a few tabs open.
- The browser runs much faster in a private window, where extensions are usually off.
Step 1: Open the Browser’s Task Manager
Chrome has its own task manager that shows how much memory and CPU each tab and extension is using.
- Windows: press Shift + Esc while Chrome is open.
- Mac or any computer: click the three-dot menu, then More tools > Task manager.
Click the Memory or CPU column to sort. Look for rows starting with “Extension:” near the top. That’s your first suspect.
Microsoft Edge has the same tool under More tools > Browser task manager. In Firefox, type about:processes in the address bar.
Step 2: Test Without Extensions
Open an Incognito window (Ctrl + Shift + N on Windows, Cmd + Shift + N on Mac). Extensions are off there by default unless you’ve allowed them. If your browser feels much faster in Incognito, an extension is very likely the cause.
Step 3: Find the Exact Culprit
- Go to chrome://extensions.
- Turn off all extensions using the toggles.
- Turn them back on one at a time, using the browser for a few minutes after each.
- When the slowdown comes back, you’ve found it.
Step 4: Fix It
- Update it. Make sure the browser and the extension are on the latest version.
- Limit where it runs. In the extension’s Details, set Site access to On click or On specific sites. It stops running on every page.
- Replace it. There’s often a lighter alternative that does the same job.
- Remove it. If you rarely use it, delete it. You can always reinstall later.
More Ways to Keep Your Browser Fast
- Turn on Memory Saver in Chrome under Settings > Performance. It frees memory from tabs you aren’t using.
- Keep your extension list short. Five well-chosen extensions beat twenty “maybe useful” ones.
- Restart your browser every few days so updates install and memory clears.
Note: Features and policies may vary by plan, region and app version, and can change at any time. Check the official help center for the latest information.
Frequently Asked Questions
How many extensions is too many?
There’s no magic number, but most people only need a handful. If you can’t remember what an extension does, you probably don’t need it.
Do disabled extensions slow down my browser?
No. Disabled extensions don’t run. They just sit there until you turn them back on.
Could a slow extension also be a security risk?
Sometimes. An extension that suddenly becomes slow and starts showing ads may have been changed by a new owner. Remove it if anything looks off.
The Bottom Line
Check the browser task manager, test in Incognito, and switch extensions back on one by one. In ten minutes you’ll know exactly what’s slowing you down, and your browser will feel new again.
Disclaimer: This article is for general information only and is based on details available at the time of writing. Prices, plans, features, release dates, policies and availability can change at any time and may vary by country. Please verify the latest information on the official website of the company or product mentioned before making any decision or purchase. This is not legal, financial or security advice; consult a qualified professional for your situation. Next DigiTech is an independent website and is not affiliated with or endorsed by the companies mentioned; all trademarks belong to their respective owners. We are not responsible for any loss or decisions made based on this content.
