A large browser cache implies that a larger amount of offline data can be stored on your PC. This, in turn, enables the browser to load certain webpages more rapidly, but there’s a problem associated with this activity. Whenever you try to open a few extra tabs, the browser slows down the whole system. It’s especially seen in Firefox. Here’s how you can limit or change Firefox cache size in Windows 11/10 to avoid the slowing down of your PC.
Change Firefox Cache size in Windows 11/10
In earlier versions of Firefox, there was a place to change the cache size to the desired value in the ‘Options’ area. That setting is no longer visible. Still, there’s a way to get through, here’s how to increase or decrease Firefox cache size!
- Open the Preferences page.
- Search for the entry – browser.cache.disk.capacity.
- Edit the value to the desired value in KB to use for the disk cache.
- Search for the entry – browser.cache.memory.capacity.
- Edit the value to the desired value in KB to use for the memory cache.
- Restart your browser.
Let us cover the above steps in detail.
Launch your Firefox browser. If it’s not updated to the latest version, update the browser.
Open a new tab in the browser.
In the URL field of the address bar, enter the following – about: config to open the ‘Preferences’ page.
Next, search for the following entry ‘browser.cache.disk.capacity’ by entering it in the ‘Search’ bar.
Edit the value to the desired number by clicking the ‘Pencil’ button.
Use the value for the disk cache.
Similarly, look for ‘browser.cache.memory.capacity’.
Choose the type of preference you are adding.
- String – any sequence of text
- Integer – a number
- Boolean – true-false
For string or integer preferences, simply type in the new value in KB to use it for the memory cache. For boolean (true-false) preferences.
Restart the browser.
Alternatively, If you would like to reduce the Firefox cache size or disable it completely, change the values for each of the entries indicated above to 0. You can also uninstall or disable Firefox extensions and themes that you don’t use as they can cause Firefox to use more RAM.
That’s all there to it!
Related read: How to change Chrome Cache size.