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Fix Error “This Webpage Is Using Significant Memory”

By Adela D. Louie, Last updated: February 2, 2023

There are many users of Safari who say that whenever they use the Safari web browser on their Mac, they get an error message saying that “This webpage is using significant memory”. Then another pop-up message will show up on your screen saying that you have to close your Safari browser.

And because of all these dilemmas, here are several solutions that you can do if you are having the same experience as the other users. If you encounter problems with other browsers, such as some web pages of Firefox can't open or the search in Google doesn't work, you can also find solutions in the recommended articles.

Part 1. Why Do I Get Error Message “This Webpage is Using Significant Memory” On Safari Browser?Part 2. Quick Fixes For Error “This Webpage is Using Significant Memory” On Safari Browser

Part 1. Why Do I Get Error Message “This Webpage is Using Significant Memory” On Safari Browser?

Many of you would as the question as to why you are having the error message “This webpage is using significant memory” when you are using your browser on your Mac. Actually, with that question, there is still no exact reason why users are having this error message.

However, this type of problem is said to be somewhat related to updating your macOS. But do not worry because we have below several ways that you can apply for you to fix this error message.

Part 2. Quick Fixes For Error “This Webpage is Using Significant Memory” On Safari Browser

Regardless of the fact that there is no exact reason why you are getting this error message when you are using the Safari browser on your Mac, we still have some perfect solutions that you can try to get rid of this error message.

Solution 1: Force Quit Your Safari Browser

Force quitting the application is one easy way of how you can get rid of the error message when using your Safari browser. This means that you can also apply this to your Safari browser. And in order for you to do this, just follow the steps below.

  • Go ahead and click on the Apple icon on your Mac.
  • And from there, simply go ahead and click on the Force Quit Application option.
  • Then, go ahead and select your Safari browser from the pop-up window on your screen.
  • And then, finally, go ahead and click the Force Quit button located below your screen.

Force Quit Safari To Fix This Webpage Is Using Significant Memory

Solution 2: Disable Your Safari Extension

In case that you want to find out why you are getting the “this webpage is using significant memory” error message when using your Safari browser, then what you will be needing to do is to have your Safari Extension be disabled. And here is how you can do this process.

  • Go ahead and click on Preferences which can be found from your Safari browser’s menu.

Disable Safari Extension To Fix This Webpage Is Using Significant Memory


  • After that, go ahead and click on the Extension icon. Then you will be able to see a list of extensions that you have on your Safari browser. So from there, go ahead and choose a certain extension.
  • After that, simply turn off the extension that you have chosen and then click on the enable checkbox for you to uncheck it.
  • Then it is now time for you to see if the error message comes back when you have already disabled the extension. And if the error message still appears, then you can go ahead and click on the Update button for you to update your extension. You can also remove the extension by hitting the Install button.

Solution 3: Remove Your Internet Plug-ins From Browser

There is a possibility wherein the cause of the error message is because of your internet plug-ins and some other add-ons that you have on your Safari browser. And because of that, the Safari browser can act differently. That is why removing those internet plug-ins and those add-ons can help you in getting rid of the error message “This webpage is using significant memory”. So for you to do that, here are the steps that you need to follow.

Step 1: Go ahead and close your Safari browser and then launch your Library folders.

Step 2: And then, go ahead and delete some files from the Library folders that have the Safari add-ons and internet plug-ins. Here are some of the folders that you need to move to your trash.

  • Internet Plug-ins
  • Input Methods
  • Input Managers
  • Script Additions.

Remove Internet Plug-ins To Fix This Webpage Is Using Significant Memory

Step 3: After that, put back the files to the Library folder.

Solution 4: Clear Up Your History, Cookies, And Cache On Safari

Just like other webpages that you tend to visit using your Safari browser, there is also a tendency that your Safari history, cache, and cookies are the reason for the error message. It is because once that these caches pile up on your Mac, it can cause some malfunction to your browser resulting in giving you the error message “This webpage is using significant memory”. And cleaning up your Safari browser is actually very easy.

  • Launch your Safari browser.
  • Then click on the History menu.
  • And from there, simply go ahead and click on the Clear History option. You will then see a pop-up window on your screen.
  • From there, just go ahead and choose the data where you want to start cleaning up your Safari browser.

Clear Up Safari Cache To Fix This Webpage Is Using Significant Memory

Solution 5: Use A Different Browser

In case that the error message still takes place on your Mac while you are using your Safari browser and you have already done all of the solutions above, then you have no choice but to switch to another web browser. You can either make use of a Google Chrome platform or a power.

Solution 6: Update Or Even Downgrade macOS If Needed

The error message “This webpage is using significant memory” can be because after you have to upgrade your macOS device to the High Sierra. So with that, you can actually try on upgrading your Mac to the newest Mojave version or have it downgraded to an earlier version.

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We know that having an error message such as “this webpage is using significant memory” can really be annoying when using the Safari browser on your Mac. That is why we have the solutions for you above that you can easily follow and apply for you to get rid of this error message.

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Adela D. Louie

Tech Website Writing /Content Optimization

Singing, smiling, surprising every day!

So as a technical writer, it is my duty to gather effective and reliable solutions to answer questions on how to deal with the issues they are having with their devices.

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