Hold left alt key to increase scroll speed, useful for viewing text heavy sites.

Fast scroll: Increase scroll speed on Firefox
Fast scroll is a Firefox add-on that allows you to increase scroll speed by holding the left alt key. It is particularly useful for viewing text heavy sites, making scrolling faster and more efficient.
Add-on stats
Manifest V2
Weekly download count: 3
Firefox on Android: No
Size: 8.28K
Source: Firefox Browser Add-ons
User reviews
by 退出中共邪教党团队保命, 2025-03-08
Great extension, but there is an annoying bug : when doing Alt + Tab to get out of Firefox (Windows 10 here) Firefox gets stuck in "rapid" mode when I come back to it until I hit Alt again. If this could be fixed it would be perfect!
by Remi, 2023-08-26
Add-on safety
Risk impact
Fast scroll requires a few sensitive permissions. Exercise caution before installing.
Risk impact analysis details
- Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood
Fast scroll has earned a fairly good reputation and likely can be trusted.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
- Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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Similar add-ons
Here are some Firefox add-ons that are similar to Fast scroll: