Now, you've checked for updates and cleared your browser junk, give Firefox a quick restart. In Firefox, select the Library button, top right.įrom the dropdown, choose everything, check the Cookies and Cache boxes and press OK. Thankfully it's really easy to clear your browser junk here's how: Here you'll see if an update is required follow the on-screen instructions to install.Īn overload of cookies and cache can seriously cause any browser to crash, lag, or in worst cases, even not launch at all. Press System Preferences > Software Update. Running the latest software helps with all kinds of annoying issues here's how: While we're talking about updates, it's also worth checking that your macOS is also up-to-date. Here you'll see if you require an update follow the on-screen instructions if you do. Open Firefox and select the Firefox menu.

It's always advised to keep your Firefox updated, as you might be missing out on performance improvements, here's how: This option blocks online trackers that may affect the normal functioning of your browser. In Firefox, select the 3 line menu then, Preferences > Privacy & Security. Plenty of web pages come packed with content you don't actually need.įirefox has a built-in content blocking feature that reduces system resources by restricting third-party tracking content from loading. So, close down any tabs you are no longer using, bookmark a few things for later and see if that helps speed up Firefox. This may be true, but this undoubtedly will eat away at your Mac resources, slowing your Mac and browser down. How many tabs do you have open right now on your browser? For a few years, Firefox has boasted about its ability to operate with up to 100 tabs open. Let's take a look at some easy fixes for a slow Firefox. It's almost painful to sit around waiting for a slow browser to load, but it's not uncommon for Firefox to become slow on a Mac here are some common reasons why: Follow our step-by-step guide and get your Firefox back to seamless browsing.

When Firefox doesn’t open or becomes unbearably slow, it's time to spring into action. Firefox can crash on your Mac, just like our other favorite browsers. Mozilla's Firefox browser might seem like the perfect alternative to Safari or Chrome, but it too is sadly not perfect.

Mozilla firefox app crashing