Google Chrome high CPU usage on a Mac computer - how to fix?

Google Chrome consumes a lot of CPU resources. How to troubleshoot this problem on a Mac?

Nowadays computers are getting faster, more powerful and complex, however malicious software developers are also making improvements to their rogue applications. Sometimes, apps like Google Chrome may work slowly or take a lot of your computer resources. A lot of Mac users report that their computer performance has significantly decreased after they started using Google Chrome as their default browser. They experience constant slowdowns in some situations their system stop responding and they have to restart their computers.

If the simple computer restart doesn't solve the issue you should continue reading this article there are various reasons why Google Chrome browser starts consuming a lot of computer's resources. One of the main reasons for high CPU usage are malicious or poorly developed extension. Another reason could be websites, that are not optimized properly. The good news is, that Google added some useful built-in tool to help you troubleshoot your problems related to Google Chrome. In this guide we will describe several useful methods that could help you solve Chrome's high CPU usage issue on a Mac computer.


Table of Contents:

Restart your application and/or Mac

This is the easiest and probably most frequent step when you encounter any type of error. A lot of computers user know this step as a rule to solve any kind of problem. You should start with restarting your browser, first close the Google Chrome, open your Mac's Activity Monitor which is under Utilities folder. Ensure Google Chrome closed all it's process, otherwise stop them manually. If your browser still consumes huge amount of CPU resource, try to restart your iMac, or MacBook.

[Back to Table of Contents]

Use Google Chrome's task manager

Probably every user in Windows world is familiar with task manager, most of Mac users also use this feature just in Mac OS world it's called Activity Monitor. Google implement such tool in their browser as well, it's called Task Manager and offers quite similar functionality as Window's or Mac's tool does, just all stats displayed are related to browser. Chrome's task manager shows how much of CPU, memory and network commits each web page, extension, and Google process, also allows you to close any of them. Using this feature you will be able to check which part cause troubles whether it's web pages, extensions, or any other.

To run Chrome's task manager click on vertical dots next to address bar then select More tools and choose Task Manager. Alternatively you can run Chrome's task manager by clicking Window menu at top of your screen and there select Task Manager.


When it started you will see a list with names of pages, extensions and others, in the same line will be displayed commitment of each resource, following those stats you can decide what's causing your high CPU usage, and by selecting it and clicking End process button you can close it immediately.


[Back to Table of Contents]

Remove additional Google Chrome extensions

Even if task manager was not displaying any high CPU usage related to extensions, when you sum all stats you will notice, that it's quite large amount of resource. Usually we install extensions to improve our browsing speed and quality, however a lot of enabled extensions will result in high consumption of your Mac's resource. To avoid this situation, but leave extensions you can choose to disable them until they are unnecessary.

To manage your extensions simply type chrome://extensions in your address bar or click vertical dots and select More options, there you will find Extensions option. Alternatively you may click on Window in menu at top of your screen and select Extensions as well.


Once you enter the list of installed extensions you can choose between enable or disable checkbox or click the trash can to remove them permanently. Once you have disabled or deleted the add-ons restart your browser in order to check if this step solved your issue.


[Back to Table of Contents]

Reset Google Chrome settings to defaults

Usually the methods listed above should help you to solve a high CPU usage issue, however sometimes it may won't work. As the last option we offer you to reset the browser to it's default settings. This step will bring your Chrome to state, it was when you installed it very first time. Bear in mind that resetting settings will delete your personal settings, cookies, bookmarks, accounts and all browsing history, so if you have any important bookmarks or anything else, create an backup of your personal browser's data before resetting.

Once you're ready for cleaning your browser, run it and click on vertical dots located at top right and choose Settings. Then click Advanced at the bottom of settings window to see all available options.


At the very end of expanded window you will find Reset option with the text below Restore settings to their original defaults. Click the Reset and confirm your action by clicking Reset once again. Afterwards your Chrome's option will be restored to defaults and your high CPU usage should be solved.


[Back to Table of Contents]

Video Showing how to solve Google Chrome high CPU usage issue on Mac

[Back to Top]

2 Comments. Click to view

About the author:

Tomas Meskauskas

I am passionate about computer security and technology. I have an experience of 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an editor for pcrisk.com since 2010. Follow me on Twitter to stay informed about the latest tech news or online security threats. Contact Tomas Meskauskas.

Our guides are free. However, if you want to support us you can send us a donation.