Firefox is the most popular browser, because Firefox is one of the fastest browser.
Firefox is claimed as the fastest ever and the least memory consuming.
If you are a firefox user browser, here are a few tips to speed up again your Firefox browser.
If we often do browsing, Firefox was saving our history into a database and can cause slow database startup process firefox.
To solve it you can use the add-ons that called Vacuum. Add-Ons Vacuum serves to "tidy up" the database files so they can optimize the speed of firefox firefox during loading.
Download and install the add-ons and you can feel the changes.
Download the add-ons Vacuum:
https://addons.mozilla.org/en-US/firefox/addon/13878
Good luck