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Firefox settings

In the address bar type about:config to open a settings table for additional, expert settings.

Setting Name Default Value Suggested Value Description
general.smoothScroll.mouseWheel.durationMinMS 200 150 The other smooth scroll values are 150. The default mouse scroll is way too slow.
general.smoothScroll.mouseWheel.durationMaxMS 400 150
full-screen-api.transition-duration.enter 200 200 0 0
full-screen-api.transition-duration.leave 200 200 0 0
toolkit.cosmeticAnimations.enabled true false F11 fullscreen slide out animations
full-screen-api.warning.timeout 3000 0 Fullscreen notification (video fullscreen, website fullscreen)

How to disable fullscreen fade in fade out animation in Firefox

Set the full-screen-api.transition-duration.enter and full-screen-api.transition-duration.leave settings to 0 0.

How to disable mouse wheel smooth scrolling in Firefox

Set the general.smoothScroll.mouseWheel.durationMinMS and general.smoothScroll.mouseWheel.durationMaxMS settings to 150 for responsive smooth scrolling.

How to disable fullscreen slide out animation in Firefox

Set the toolkit.cosmeticAnimations.enabled setting to false.

How to disable the fullscreen “site is now full screen” notification in Firefox

Set the full-screen-api.warning.timeout setting to 0.