Does exactly what it says on the tin, highly recommend.

works perfectly fine. no ads, just click it and it works. if i was able to give 100 stars, i'll give this extenison a 100 stars.

You are God.

It used to work great. I don't know if it is because of Firefox or Facebook changes, but it just does not work on Facebook any longer.

very nice extension

uBlock Origin -> My Filters
anysite.com##+js(aeld, /blur|focus|afterblur|mousemove|visibilitychange/)

I install this add-on only for one thing - to disable auto refreshing Facebook news feed. It work well! But when I found one side effects - you can't make posts on web version of Instagram. Always have a error "Your post could not be shared. Please try again". So sadly I can't use it(

Works. Make sure to toggle it for the sites you need it to work on.

Works great for coursera.org courses on Rhyme

Thanks a LOT

YOU MADE MY DAY

love your work. this one hasn't noticeably let me down like the other visibility api spoofers. ~ works perfect on multiple tabs on twitch, & youtube.
(but also need to disable browser-animation throttling in about:config.)