How to Clear Cache Firefox - Firefox

Open Firefox, press Ctrl+Shift+Delete (Windows/Linux) or Command+Shift+Delete (macOS) to access the Clear Recent History window instantly.

This shortcut bypasses menus entirely. When the dialog opens, select your time range—"Everything" clears all cached data, while "Last Hour" or "Last Day" targets recent browsing only. Check the "Cache" checkbox to ensure it's selected. Click "Clear Now" and Firefox removes temporary files stored on your device.

Why Clear Your Firefox Cache

Firefox stores website images, scripts, and files locally to load pages faster next time. Over months, this cache grows to hundreds of megabytes. Clearing cache frees disk space and removes browsing traces for privacy. It also fixes loading issues when corrupted files prevent pages from displaying correctly.

Alternative Menu Method

If keyboard shortcuts don't work, navigate manually. Click the hamburger menu (three horizontal lines) in the top right. Select "Settings," then choose "Privacy & Security" from the left sidebar. Under "Cookies and Site Data," click "Clear Data." A window appears—uncheck everything except "Cached Web Content," then click "Clear."

Browser Settings for Auto-Clear

Firefox 148.0.2 lets you automate this process. In Settings > Privacy & Security, scroll to "Cookies and Site Data." Enable "Clear cookies and site data when Firefox is closed." This removes cache automatically each session without manual action.

For permanent privacy, consider checking "Delete cookies and site data when Firefox is closed" alongside cache clearing. The Mozilla-developed browser prioritizes user control, letting you customize exactly what gets deleted.

Quick recommendation: Use Ctrl+Shift+Delete weekly if you browse frequently. It takes 10 seconds and maintains optimal Firefox performance across Windows, macOS, and Linux platforms.