Whenever you browse the web in Firefox, the browser stores website data including cookies so that it doesn't have to do so again each time you revisit a site. In theory this should speed up your browsing experience, but there are some scenarios where you might want to clear the cache and start anew. Keep reading to learn how it's done on Mac, iPhone, and iPad.

mozilla firefox banner
There are a couple of situations where you might benefit from clearing Firefox's cache. If a site you regularly frequent has elements that have stopped working, or if a site has stopped loading completely, there may be a conflict between an older version of it that Firefox has cached and a newer one.

Or perhaps you simply want to protect your privacy by wiping the slate clean and removing all the data associated with websites you've visited, including any user-identifying cookies. Either way, here's how it's done on macOS and iOS.

How to Clear Firefox's Cache on Mac

  1. Launch Firefox on your Mac and click the Open menu icon (three lines in a column) in the top-right corner of the browser window, then choose Preferences.
    firefox

  2. Click Privacy & Security in the left column, then scroll down to "History" and click the Clear History... button.
    firefox

  3. Select a Time range to clear option from the dropdown, then check the boxes against the information that you want to remove and click OK.
    firefox

How to Clear Firefox's Cache on iOS

  1. Launch Firefox on your ‌iPhone‌ or ‌iPad‌ and tap the menu icon (three lines in a column) in the bottom-right corner of the screen.
  2. Tap Settings.
    firefox

  3. Under "Privacy," select Data Management.
  4. Toggle the switches against the data types that you want to clear, then tap Clear Private Data.firefox

Note that in the last screen, you can tap Web Site Data to see a breakdown of sites that Firefox holds data for, and you can remove sites individually by tapping the red minus button beside each one. For a more privacy-centric browser on iOS, consider using Firefox Focus.

Popular Stories

Apple Logo Top Half

Early iOS 26 Software Leak Uncovers Dozens of Upcoming Apple Features

Monday December 15, 2025 3:05 pm PST by
Software from an iPhone prototype running an early build of iOS 26 leaked last week, giving us a glimpse at future Apple devices and iOS features. We recapped device codenames in our prior article, and now we have a list of some of the most notable feature flags that were found in the software code. In some cases, it's obvious what the feature flags are referring to, while some are more...
apple beta 26 lineup

Apple Leak Confirms Work on Foldable iPhone, AirTag 2, and Dozens More Devices

Monday December 15, 2025 2:05 pm PST by
Last week, details about unreleased Apple devices and future iOS features were shared by Macworld. This week, we learned where the information came from, plus we have more findings from the leak. As it turns out, an Apple prototype device running an early build of iOS 26 was sold, and the person who bought it shared the software. The OS has a version number of 23A5234w, and the first...
iOS 26

iOS 26.3 Beta 1 Features: What's New So Far

Monday December 15, 2025 4:23 pm PST by
Apple is testing iOS 26.3, the next version of iOS 26 that will launch around January. Since iOS 26.3's testing is happening over the holidays, it is a smaller update with fewer features than we've seen in prior betas. We've rounded up what's new so far, and we'll add to our list with subsequent betas if we come across any other features. Transfer to Android Apple is making it simpler...
iPhone Top Left Hole Punch Face ID Feature Purple

iPhone 18 Pro Features Leaked in New Report, Including Under-Screen Face ID

Tuesday December 16, 2025 8:44 am PST by
Next year's iPhone 18 Pro and iPhone 18 Pro Max will be equipped with under-screen Face ID, and the front camera will be moved to the top-left corner of the screen, according to a new report from The Information's Wayne Ma and Qianer Liu. As a result of these changes, the report said the iPhone 18 Pro models will not have a pill-shaped Dynamic Island cutout at the top of the screen....
iOS 26

iOS 26.4 and iOS 27 Features Revealed in New Leak

Friday December 12, 2025 10:56 am PST by
Macworld's Filipe Espósito today revealed a handful of features that Apple is allegedly planning for iOS 26.4, iOS 27, and even iOS 28. The report said the features are referenced within the code for a leaked internal build of iOS 26 that is not meant to be seen by the public. However, it appears that Espósito and/or his sources managed to gain access to it, providing us with a sneak peek...
Apple Foldable Thumb

Leak Reveals Foldable iPhone Details

Monday December 15, 2025 9:09 am PST by
The first foldable iPhone will feature a series of design and hardware firsts for Apple, according to details shared by the Weibo leaker known as Digital Chat Station. According to a new post, via machine translation, Apple is developing what the leaker describes as a "wide foldable" device, a term used to refer to a horizontally oriented, book-style foldable with a large internal display....
apple iphone air battery pack

Apple Aims to Boost Popularity of iPhone Air 2 in Two Ways

Tuesday December 16, 2025 11:06 am PST by
We have been covering iPhone 18 Pro, iPhone 17e, and iPhone Fold details from The Information's report about future iPhone models, and next up is the iPhone Air 2. The report says that Apple aims to make the iPhone Air 2 more attractive in two ways. First, Apple is apparently considering adding a second rear camera to the device, which would resolve a key limitation. The current iPhone...
airpods max 2024 colors

AirPods Max 2 Likely to Offer These 10 New Features

Monday December 15, 2025 7:41 am PST by
Apple released the AirPods Max on December 15, 2020, meaning the over-ear headphones launched five years ago today. While the AirPods Max were updated with a USB-C port and new color options last year, followed by support for lossless audio and ultra-low latency audio this year, the headphones lack some of the features that have been introduced for newer generations of the regular AirPods and the ...