An ad popped up on youtube before a song. That is very strange indeed. Seems this extension does not work like it should.

Update your certificates already! Tired of getting a pop up from Bitdefender that it blocked a connection to github.xyz every time I use the web. Extremely frustrating!

7-10-25: cannot deal with this little square social media widgets-takes too much time to delete them. Slow to load
author needs to find a way to IDENTIFY WHICH block to use for any given crap ad. It's too slow. Need a method to select all adds you want to block at once. Except that it's slow good addon

3-27-25: too damn slow.
aug. 2024: Getting worse by the minute: slow to load slow to mark offending images, many sites are immune or very difficult to block. Not as good as it once was. Sites have gotten clever in making it not work or making it more work to block them than is worth it. It's slow to load and filters slow to activate. Still no easy way to report sites that do not work with it. You have to block like 10 different widgets to get rid of one on social media sites. To hard to block multiple ads at one time.
5-19-24: has deteriorated in last year or so. SLOW to load, Slow to delete ads you have defined. Sites are working around it making it not worth the time to delete the ads using it. Still have not found a better one, so can't complain too much
1-28-24; All good things eventually deteriorate and ublock origin is no exception. too slow to respond to browser callups, cannot deal with ads that repeat and keep changing, no easy way to report pages that don't work SLOWWWW. Downgraded to 2 stars
1-5-24 -really starting to get SLOWWW and a PITA. Difficulty marking items you want nuked. Wasn't able to get it to work with disk files, only online. You can tell some of the websites are desiging their pages such that ublock doesn't work or works inefficiently requiring more time to get rid of their garbage than is worth it. Popup slow to appear. Still a good extension but has gotten worse not better.
9-22: one of the VERY FEW addons that actually works and is not a PITA. Congratulations there ARE some good programmers out there.
10-3-21: near perfect with a few minor flaws: ran across tiny social widgets that cannot be nuked. Try to nuke them with either lightning or pen, works for one time only than come back again. webpages are getting smarter in how to stop u block. Also cannot find a link in the extension to send input to developers whereas before there was such a link to report instances where the program did not work.

One of the VERY FEW addons that is really good and works well. Easy to block objectionable images on webpages so as to deny them ad revenue, like with sites that mistreat users. Only criticism I have is that when using an encrypted connection like with a vpn or tor, the settings do not stay and you have to reset the blocks. I'm guessing its because the ips and other stuff changes with tor so cannot make the blocks permanent. Great extension over all. Look for other add-ons by this author they will be good.

I have issues with uBlock on Apple Silicon Firefox. It doesn't block anything, and usually when you open the uBlock menu nothing appears. Occasionally, an extension (possibly not uBlock) crashes Firefox.

thanks for hibernating uMatrix in favor of uBO which is harder to use and offers less granularity

these 2 projects should never have been split

Ive been using this extension for years. Now suddenly i am seeing add after add on Youtube. Why is that dear developers? Are you aware of the problem?

Судя по всему начали интегрировать кривую рекламу, белые окна на ютубе которые приходится скипать...

Does not work for Twitch at the moment, kind of a bummer since it's the site I visit the most.

I used to love it but since a week or two it doesn't block ads on Facebook anymore. Will try again in a month and change the review if it works again, because I really had no problems with it before.

Schwerer Bug in Verbindung mit Ebay - Login und logout nicht möglich. Ebay Seite wird nicht mehr korrekt dargestellt.
Nach Abschaltung alles normal.

Something has changed between FF 80.0 and 80.0.1! Aug 30 and Sept 03, 2020. Either a change to the code for uBlock Origin, or a change Yahoo made, that doesn't like uBlock now.
On Aug 30, 2020 I could access my contacts normally in Yahoo mail. Now on Sept 03, My contact list is grayed out, until I turn off uBlock, then my contact list appears normally! I STRONGLY suspect yahoo made changes, since the uBlock update preceded this problem!
It may also have to be Off to allow display some web flyers!

Bloquea sonidos y audios de páginas web

No longer works for intranet http servers even when on the whitelist! Research shows that this might now be a feature.

Worked pretty well but I absolutely do not understand why you would remove the individual blocker for every website in the latest update. I had to manually downgrade the plugin. Auto-Update=off

Don't like the new feature that takes away dynamic filtering to green list a site. Why should the developers care if we have "improper usage" (whatever that means) of dynamic filtering. The extension is on our computer, not yours. Also, what do you mean by "seeing way too many cases of improper usage of dynamic filtering . . ." How are you seeing anything? Are you spying on the usage of my own computer?
What I am seeing with this new feature is sites not coming up properly and I have to double-click "CTRL" anyway to get the site to work properly.
uBlock is a great extension, but it is slowly being ruined. Shouldn't be surprised - anything that is good and great eventually gets ruined. I understand the techie truism, "if you pay for technology, you are the customer, if you get it free, YOU are the product". Just thought uBlock was different. Ho-Hum, my bad.

Blocks Twitch modules, half of the page is not displayed. Who knows where else this addon will screw up