Doesn't work on tumblr and causes huge ram leaks on know your meme.

It doesn't bloody work!

BREAKS VIDEO on some sites .. espesially IMDB
I dont advise anyone to install this addon unless it gets a major update

Diese App blockiert unter Firefox in GMAIL beim Schreiben von Mails das Drop-down-Menü der vorhandenen Kontakte/Gruppen. Man kann Kontakte nur mehr einzeln, händisch eintippen. Aus diesen Gründen ist das Add-on unbrauchbar.

this should be build into browsers from the start!
But meanwhile, we have this neat thing.

Whomever gave 1 star and is saying to use Video Autoplay Blocker is probably the author of that garbage add-on. It does not work at all.

THIS ADDON WORKS PERFECTLY

Please fix this to work with JW player.

Would have a 5★ review if it were not for making JW Player crash out — and JW Player is the most common embedded player, claimed to be on 2 million websites. This IS fixable because as another reviewer pointed out, the rival "Video Autoplay Blocker" addon works fine with these sites — the only reason I'm not using that addon is because it often leaves its "play" button at random positions on the site I'm viewing.

Does what it says. If you want to preload videos/thumbnails, you can by hovering the mouse enough times or clicking and releasing (to activate the media). The only problem I saw is that in some websites, like reddit, don't play videos with the extension on -- they don't work. But this is very minimal.

Works but errors videos... try 'Video Autoplay Blocker' addon. It works good in my testing so far.

It puts a 'Play Video' in top corner.. WORKS GREAT and I checked the code with 'Extension Source Viewer' and it is clean, no spyware in it. 5 STARS!

Works as intended. Big thanks Afnan Khan.

Works fine on all sites which formely drove me crazy - like chip.de

Doesn't work, both Washington Post and Travel Advisor blow right past this app.

Not working in FF 70.0.1 (64-bit) on any of the multiple offenders' websites I have checked: MSN, Yahoo, CNN, etc... All videos autoplay as annoying usual.

Whitelist is shown in Options but can't be edited.

Doesn't prevent udemy.com from preloading every video.

Via on-off testing I have determined that my HP desktop will not awake from sleep mode if Firefox is running with this extension running.

Does not work

Doesn't work

Several issues with this addon that made me uninstall it:
- It simply doesn't work for some news websites that autoplay HTML5 video.
- The options menu displays a table of exceptions you've added, but it's always blank and can't be edited.
- It doesn't have any way of adding global exceptions for things like Bandcamp, where each artist has a domain prefix you must allow manually to get tracks auto-advancing.
- Most critically, this disables audio in many video conferencing web apps like Google Meet, and disabling the addon for them doesn't always work.

This plugin works where the built in firefox html 5 blocker does not (no matter how I configure it) which would normally mean 5 stars.

However it also for some reason blocks web fonts. As a developer that is a big issue for me and as a developer I have no idea why this html5 blocker would prevent webfonts from loading.

Because it works well 5 stars because it breaks websites fonts -3 stars