How to Delete Browser Cache Firefox - Firefox

Open the Firefox menu > Settings > Privacy & Security, scroll to "Cookies and Site Data," and click "Clear Data" to delete your browser cache.

Here's the thing — clearing your cache in Firefox takes about 30 seconds and frees up disk space while boosting privacy. This guide walks you through it.

Two Ways to Delete Cache in Firefox

The easiest method? Hit Ctrl+Shift+Delete (Windows/Linux) or Command+Shift+Delete (macOS). This opens the Clear Recent History window instantly. Select "Everything" from the time range dropdown, check "Cache," and click "Clear Now." Done!

Prefer the menu route? Go to Firefox menu (three horizontal lines) > Settings > Privacy & Security. Scroll down to "Cookies and Site Data" and click "Clear Data." Make sure "Cached Web Content" is checked, then hit the button. Your browser cache gets wiped immediately.

Why Delete Browser Cache?

Cached files pile up over time. Firefox stores images, scripts, and webpage data locally to load sites faster on repeat visits. But this accumulation can slow things down and eat storage space. Plus, if you're concerned about privacy (Firefox was built with that in mind since 2002), clearing cache removes traces of your browsing history that sites could potentially access.

Some people delete cache weekly. Others do it monthly. It depends on how much you browse and your privacy preferences. If you're using a shared computer, clearing cache is especially smart.

Auto-Clear on Exit

Want Firefox to handle this automatically? Go to Settings > Privacy & Security, find "Cookies and Site Data," and toggle on "Delete cookies and site data when Firefox is closed." Now your browser cache deletes itself every time you shut down the app. No manual work required!

The bottom line: delete your browser cache regularly for better performance and privacy. Firefox makes it painless either way.