Today, you will discover why is firefox so slow with solutions for Mozilla Firefox slow issues on various devices including Windows 10, Unbuntu, Mac, & others.
Getting a sluggish web browser is frustrating because it is impossible to work there. The loading speed of a web page depends upon both the browser and internet connection. Firefox is lazy because of the large number of browser extensions and add-ons.
That’s why we are writing this post to help existing Firefox users find ways to optimize and make it faster than any other browser. Below are the common reasons why is firefox so slow.
Table of Contents
Why is Firefox so slow?
Sometimes, Firefox slow loading or freezing happens because of an obsolete version of the software. In that case, you must check for a new version released, and update or download to the latest version of Firefox. If automatic update is disabled, follow these steps to update Firefox manually:
- Open Menu by clicking on three small lines on the top left corner.
- Select ‘About Firefox.’
- It will automatically check for updates and download it.
- Restart your browser to apply the updates.
If you are not being able to update using the above steps, uninstall old Firefox from Control Panel. Then you can download a new latest version of Firefox.
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Excessive History & Data
If you have never cleared cache, cookies, history, and other data since day one, then it may cause Firefox slow on startup. A large number of system junk requires more time to read by the browser.
To fix this, all you need to do is visit the advanced settings of Firefox. Then, remove all data including history, cache, cookies, usernames & password. This will certainly reset your browser, but it is worth it. Always make sure to keep a backup of necessary data before doing this.
Large Number of Tabs Opened
It is evident that if you open a large number of tabs, Firefox is running slow or freezing. For a computer with lower memory and specifications, we recommend you do not open more than 5 to 6 tabs at once.
Now there is no specific number for how many tabs will hang Firefox. It is good practice to keep the number of active tabs as low as possible for a smooth interface. Close all unnecessary tabs immediately after the work is finished.
Disable Hardware Acceleration
- Open Menu.
- Navigate to Options > General > Performance .
- Disable ‘Use Recommended Performance Settings’.
- Uncheck ‘Use Hardware Acceleration When Available’.
Firefox Slow on Mac
Not only Windows but Mac & Macbook Pro users also may face the problem of firefox slow. Along with the causes mentioned above, some other general reasons are:
- Too much background software running that consumes RAM & CPU.
- Multiple tabs open simultaneously.
- Lack of maintenance and clean up.
Therefore, we can speed up firefox on Mac OS by terminating all the unnecessary tabs, background apps, and software. Try to clear browser data and update Mozilla Firefox. Enable or install required plugins like JS & Adobe Reader.
As already described, add-ons slow down the browser. Therefore, we can turn on safe mode to stop extensions from autostarting in the following way.
- Open Menu and select Help
- Enable the ‘Restart with add-on disabled’ option.
Doing this will turn off all scripts and extensions that automatically start without our permission, starting the browser in safe mode. Similarly, these tricks will also work for Ubuntu & Linux Operating Systems.
Firefox Slow To Load Extra Fixes
In addition to the above solutions, you can try the following fixes for the firefox slow loading issue.
- Update Video Drivers by following your manufacturer’s instruction or by visiting their official website.
- Upgrade the RAM & CPU capacity of your computer.
- Kill other useless running apps through task manager.
Firefox could be slow because of many reasons, depending upon the operating system and version of the software. Some common causes are outdated browser, plugins and extensions overload with excessive history and stored data. A low specification PC faces such issues higher than macbook and other expensive products. We have described more reasons above.
We can fix slow firefox by reducing the plugins and add-ons overload, increasing RAM and CPU, updating drivers, doing maintenance and clean up, and performing antivirus scan. More methods are described in the article above.
Firefox could be downloading items slow because of the restriction from download host, or running of multiple downloads in the background. Sometimes, slow internect connection issues also lag download speed.
To find out which tab is slowing down firefox, simply open a new tab and enter about:performance in the URL box. It will display all the data of memory usage and web pages performance. You can analyze it and discover those tabs that are slowing down Firefox.