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If ads have started showing up in your Facebook feed after years of a clean one, nothing on your end broke. The volunteer team behind uBlock Origin has decided to stop chasing Facebook's ad code, and some users are already seeing the results.[1]
It is the second squeeze on ad blocking in a matter of weeks. On August 31, 2026, Google removes all remaining Manifest V2 extensions, including the full version of uBlock Origin, from the Chrome Web Store.[2]
That matters for more than feed clutter. According to an All About Cookies survey of 1,000 U.S. internet users, 59% of ad blocker users rely on the software to block malware and 54% use it to protect their privacy. Only 19% said their blocker was completely effective, and that was before this week.
Here is what changed, what did not, and what still blocks Facebook ads.
The decision surfaced on the project's own subreddit, where a member of the uBlock Origin development team explained it directly. They called Facebook a "disgusting anti-user site" and said its developers watch open-source ad-blocking projects and quietly change their code to slip ads past the filters.
The reasoning came down to arithmetic. As the team member put it, the "by users" side of uBlock Origin is basically two people. The "for users" side is tens of millions.
The existing Facebook filters have not been removed and still work today. What the team will no longer do is rebuild them each time Facebook breaks one. The maintainers added that "anyone else who wants to deal with this disgusting site is free to make pull requests with working solutions themselves."
So the filters hold until Facebook next changes something. Then they stay broken. Users on the same subreddit have already reported ads returning after years without them.
An ad blocker works a bit like a mail sorter looking for a specific word stamped on an envelope. Facebook's approach has been to smudge the stamp.
According to the team's explanation, Facebook hides the word "Ad" by splitting it across unrelated bits of code and padding it with junk text your browser never displays but a filter still trips over. The labels used to identify ads also rotate on their own. One team member described Facebook randomizing the order and, at one point, inserting fake letters to throw filters off entirely.
For you, that is why a feed can go from clean to ad-heavy overnight without you touching a setting. Nothing on your computer changed. The thing your filter was looking for did.
This is separate from the Chrome situation, and it is worth not confusing the two. Chrome removed the last uBlock Origin workaround earlier this summer as part of Google's move to Manifest V3, a platform-level change affecting the extension everywhere. The Facebook decision is the uBlock Origin team choosing not to fight one site.
Together, though, they point the same direction: Volunteer-maintained ad blocking is getting harder to rely on.
Before picking a replacement, it helps to know what this specific problem demands.
Against those three criteria, Total Adblock is the strongest option we have tested. It historically scores 100/100 on AdBlock Tester, passing every banner, interstitial, pop-up, and contextual ad test. It blocked both Facebook and YouTube ads in our testing, some of the harder platforms to handle consistently. It works across Chrome, Edge, Safari, and Opera, plus iOS and Android apps.
Top ad blocker that historically scores 100/100 on AdBlock Tester, passing every banner, interstitial, pop-up, and contextual ad test
Successfully blocked YouTube ads in our testing, one of the trickier platforms for ad blockers to handle consistently
Works across Chrome, Edge, Safari, and Opera, plus Android and iOS mobile apps
Price: Starts at free or $1.59/mo
For side-by-side test scores, see our best uBlock Origin alternatives.
uBlock Origin's Facebook filters work right now. They will keep working until Facebook next changes its code, and then no one is committed to fixing them. That is a maintenance decision by a two-person volunteer team, not a bug.
The firmer deadline is August 31, 2026, when the full extension leaves the Chrome Web Store entirely. If you have been running uBlock Origin on Chrome for ad blocking, tracker protection, or malware screening, you need a replacement either way.
Install a tested, actively maintained blocker, then spend 10 minutes in your Facebook ad settings tightening what Facebook is allowed to target you with.
Top ad blocker that historically scores 100/100 on AdBlock Tester, passing every banner, interstitial, pop-up, and contextual ad test
Successfully blocked YouTube ads in our testing, one of the trickier platforms for ad blockers to handle consistently
Works across Chrome, Edge, Safari, and Opera, plus Android and iOS mobile apps
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