How to fix a website is slowing down your browser in Firefox

The Firefox alert that says ‘A website is slowing down your browser’ is usually caused by heavy processes running in the background. We can check the task manager to identify and stop the process so that the browser returns to its normal state. find out now how to fix a website is slowing down your browser in firefox

Recently, while visiting a website through Firefox, I received a popup saying: A website is slowing down your browser . Besides that, there were two options: For Y Expect.

If I press the Wait button, I again get this error in a few seconds. On the other hand, the Stop button would prevent the site from loading any further.

To make matters worse, the error message simply said that ” A website » is slowing down the browser, it does not mention the actual site that was the main cause.

In this regard, many concerned users have already raised their concerns on various and are looking for ways to fix this issue.

If you are also on the same page, this guide is here to help you. Follow the various workarounds.

Use Firefox’s strict protection

In many cases, this issue arises when there are problems with the page’s script file. This, when combined with browser trackers, only makes things worse. So, to know how to fix a website is slowing down your browser in Firefox the best option is to disable these trackers and allow the scripts to load efficiently.

start the and go to the following location: about: preferences # privacy
Select Strict in Protection of enhanced tracking .

Restart your browser and check if the page can be loaded successfully or not.

While this solution is known to work for some, however, there is an argument against it. Enabling strict mode could break some site components, which would only degrade the current issue. So if this happens to you too, go back to the standard mode and move on to our next solution.

Using the Firefox Task Manager

Although the error message does not help identify the culprit, the Firefox task manager could help you a bit. It lists all the sites along with the total resources they consume. You can then take a look at it and close the site that leads to maximum consumption.

Here are the steps to use Firefox Task Manager to quit website tabs :

Throw the Mozilla Firefox on the computer,
Type about: performance in your address bar and hit the Enter key.
This will show all the sites that are currently open and their impact on memory.

Move your mouse over the one with the maximum energy impact and press the button To close X button.

This will close that site and hopefully the problem will be fixed as well.

Sometimes the site exhausting the most resources may not be the culprit. Therefore, you would have to turn your attention to the second or third most energetically impactful website and act accordingly.

Clear data from Firefox

As you continue to use the browser, your data accumulates over time. This would slow down the entire browsing experience and the loading time of the sites could be one of the biggest victims. Therefore, it is recommended to delete these cache and data files immediately.

Here are the steps to clear Firefox data :

start the Firefox Computer browser.
Access about: preferences # privacy in the address bar to open the section Privacy & Security .
scroll to Cookies and site data and clickDelete data.

Select the check box Cookies and Site Data Y Cached web content .
Hit the clear button.

Check if you can fix the error a website slowing down your browser in Firefox.

Clearing the cache and data would disconnect you from the sites and the latter might take a few seconds longer the next time it loads. However, these are just the one-time commitment that might prove worth the efforts.

Disable Adobe Flash Protected Mode

Adobe Flash has now been deprecated for HTML5, however some of its components are still present in most modern web browsers.

One such feature is Flash Player Protected Mode. Since it is no longer used in Firefox, it is better to disable it, otherwise its scripts could slow down the entire loading time of websites.

Here are the steps to disable Adobe Flash Protected Mode :

Go to the screen of its Desk , right click to an empty location for the context menu.
Select New > Text document on the menu.

Name this file mms.cfg (make sure to change the extension type from .txt to .cfg ).
Open the fine, type ProtectedMode = 0 and then save it.
Now start the File Browser and go to the following location: C:\Windows\SysWOW64\Macromed\Flash
Copy and paste the mms.cfg file into this directory Flash .
You can request administrative permission dialog, click Continue Command button.

If you still depend on Flash content, this file could prevent it from loading. Therefore, set the value of ProtectedMode to 1 or delete the file completely.

Update Firefox processes

For the proper functioning of this browser, all its related frameworks, processes and services must also be running. If there is a problem with any one of them, then the whole browser could be affected.

As far as the current issue is concerned, HangMonitor and ProcessHangs are the two responsible processes. Therefore, restarting both processes might fix the underlying problem.

Here are the steps to update Firefox process :

start FirefoxComputer.
Open the about:config page in the browser’s address bar.
Click on Accept the risk and continue command button to proceed with caution.

now write dom.ipc.processHangMonitor in the search box and press the Enter key.
Click on the toggle button on the far right to change its value to Fake.

Similarly, find dom.ipc.reportProcessHangs and change its value to False also.

Wait a few seconds and revert the value of both processes to True.
Restart your browser once and the problem is now fixed.

While this process has some technicalities involved, however, after a successful run, the issue might be rectified.

Conclusion: Firefox website slows down the browser

So this was all from this guide on how it can be fixed a website that slows down error of your browser in Firefox. We have shared five different types of fixes, any of which should work for you.

In my case, the crawlers were not allowing some website components to load properly. When switching to mode strict protection the problem was solved.

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