What is Firefox data?

Do I need to keep old Firefox data?

The "Old Firefox Data" folder is created when the browser is refreshed. It contains the original profile you were using before the refresh. If anything seems wrong or missing, you might be able to recover what you want from it. Once you are sure you no longer have need of the old profile, you can remove it if you want.

How do I stop Firefox from using so much data?

1Update to the latest version. The latest Firefox version may include performance improvements. ... 2Restart Firefox. ... 3Restart your computer. ... 4Disable resource consuming extensions and themes. ... 5Hide intrusive content. ... 6Use fewer tabs. ... 7Check Firefox hardware acceleration. ... 8Close other applications.Firefox uses too much memory or CPU resources - How to fix

What is Firefox and do I need it?

Mozilla Firefox is an open-source that ensures that it is compatible with other browsers and cares about the open web. Firefox has made the code that runs the browser open for anyone to adjust and use as long as it adheres to its license policy.

Where is Firefox data stored?

%APPDATA%\Mozilla\Firefox\Profiles\ A list of profiles will appear at the top of the Start menu. Click on the profile folder you wish to open (it will open in a window). If you only have a single profile, its folder would have "default" in the name.