How to Clear Mozilla Firefox Cache on macOS Sonoma

macOS SonomaMozilla Firefox

Guide to Clearing Mozilla Firefox Cache on macOS Sonoma

Follow these 5 steps to clear Mozilla Firefox cache on your macOS Sonoma

Is Mozilla Firefox on your macOS Sonoma computer loading slowly or displaying outdated content? Clearing the browser cache is one of the fastest fixes. Your macOS Sonoma system stores temporary browser files to speed up web browsing, but over time this cache can cause problems. Follow the instructions below to clear the Mozilla Firefox cache on macOS Sonoma.

Open Firefox Settings

Click the hamburger menu (☰) in the top-right corner, then click "Settings".

←→

example.com

☰

New Tab

New window

History

Downloads

Settings

Go to Privacy & Security

In the left sidebar, click "Privacy & Security".

Settings

General

Home

Privacy & Security

Find Cookies and Site Data

Scroll down to the "Cookies and Site Data" section and click "Clear Data…".

Cookies and Site Data

Clear Data…

Select Cached Web Content

Make sure "Cached Web Content" is checked. You can uncheck "Cookies and Site Data" if you only want to clear the cache.

Clear browsing data

Time range:All time ▾

Browsing history

Cookies and site data

Cached Web Content

Clear

Click Clear

Click the "Clear" button to remove the cached data. Confirm if prompted.

Clear browsing data

Time range:All time ▾

Browsing history

Cookies and site data

Cached Web Content

Clear

See the full Mozilla Firefox guide for Desktop

Frequently Asked Questions

How do I clear Mozilla Firefox cache on macOS Sonoma?

To clear Mozilla Firefox cache on macOS Sonoma, open the browser settings or use a keyboard shortcut, navigate to the clear browsing data section, select cached images and files, and click clear. Follow our step-by-step instructions above.

Will clearing Mozilla Firefox cache on macOS Sonoma delete my passwords?

No. Clearing the cache on your macOS Sonoma only removes temporary website files like images and scripts. Your saved passwords in Mozilla Firefox are stored separately and won't be affected. Just make sure you only select 'Cached images and files' and leave 'Passwords' unchecked.

How often should I clear Mozilla Firefox cache on my macOS Sonoma?

For most macOS Sonoma users, clearing the Mozilla Firefox cache every 2-4 weeks is a good routine. If you browse frequently or notice slow performance, you might want to clear it more often. There's no harm in clearing the cache — it's a safe and routine maintenance step.

Will clearing cache speed up Mozilla Firefox on my macOS Sonoma?

Yes, clearing the cache can often improve Mozilla Firefox's speed on your macOS Sonoma, especially if the cache has grown large or contains corrupted files. After clearing, the first page loads may be slightly slower as resources are re-downloaded, but overall performance usually improves.

Is it safe to clear Mozilla Firefox cache on macOS Sonoma?

Absolutely. Clearing the Mozilla Firefox cache on your macOS Sonoma is completely safe. It only removes temporary files — your bookmarks, passwords, browsing history, and personal data remain untouched. It's a routine maintenance task recommended by tech professionals.

Will I be logged out of websites after clearing Mozilla Firefox cache on macOS Sonoma?

If you only clear the cache (cached images and files) in Mozilla Firefox, you will NOT be logged out. However, if you also clear cookies and site data, you will be logged out of most websites. When clearing, only check the cache option to stay logged in.

What does Mozilla Firefox cache on my macOS Sonoma actually store?

The Mozilla Firefox cache on your macOS Sonoma stores temporary copies of website resources — images, CSS stylesheets, JavaScript files, fonts, and other web content. This allows Mozilla Firefox to load previously visited pages faster by using local copies instead of downloading everything again.

How much storage does Mozilla Firefox cache use on macOS Sonoma?

The Mozilla Firefox cache size on your macOS Sonoma varies based on your browsing habits, but it typically ranges from a few hundred megabytes to several gigabytes. Heavy browsing and visiting media-rich sites increases cache size. Clearing the cache is an easy way to reclaim storage space.

Can I clear Mozilla Firefox cache for just one website on macOS Sonoma?

In some cases, yes. On desktop versions of Mozilla Firefox, you can clear cache for specific sites through developer tools or site settings. On mobile, the options may be more limited. For the most reliable fix, clearing the entire Mozilla Firefox cache is recommended.

What's the difference between cache and cookies in Mozilla Firefox on macOS Sonoma?

On your macOS Sonoma, the Mozilla Firefox cache stores website files (images, scripts) for faster loading, while cookies store data like login sessions and preferences. Clearing cache helps fix display issues; clearing cookies logs you out of sites. These can be cleared independently.