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.