Firefox has it&#x27;s own built in cleanup tool. I used it recently when I was seeing odd behaviour and delays loading pages.<p><a href="https:&#x2F;&#x2F;support.mozilla.org&#x2F;en-US&#x2F;kb&#x2F;refresh-firefox-reset-add-ons-and-settings" rel="nofollow">https:&#x2F;&#x2F;support.mozilla.org&#x2F;en-US&#x2F;kb&#x2F;refresh-firefox-reset-a...</a>