I've been using this extension for some time now, but it seems like it was blocking PayPal - couldn't sign in to the website. When I disabled this add-on all went normal with PayPal. I've read that there's a risk involved with extensions like this one that request "Access your data for all websites" - because they can read usernames and passwords. Since this add-on is not monitored nor updated I decided to remove it.

incredibly good tool to change the speed of videos and even skip back and forth in videos where you normally don't have that option (some webinars for example)

So grateful for this extension! You have saved me HOURS of watching study videos. THANK YOU!!!

Firefox port of one of the most useful Chrome plugins.

Rating 1 star because this one is abandoned, up-to-date and maintained version here:

https://addons.mozilla.org/en-US/firefox/addon/video-speed-controller-new/

Useful extension and really customizable.

wonderful

Works with Canvas videos for college. Great because those don't have 2x speed or higher, so this fixes that issue. Thanks so much.