Firefox has no setting that hides AI-generated images on the sites you visit. You can still cut down on how many you see, but no single switch does it all. Each option below covers a different part of the web, so the most effective approach is to combine a few.
Firefox 148 added a section called AI controls to its desktop settings, including a Block AI enhancements switch. The name makes it sound like the answer, but it manages Firefox's own features, such as its sidebar chatbot, link previews and AI-enhanced tab groups.
It's worth turning on if you don't want those features. However, it doesn't filter what websites show you, and Mozilla's support page says the sites you visit fall outside it. An AI image on a web page will look the same either way.
Image search is where a lot of people notice AI images first, and it's the easiest place to reduce them.
Use DuckDuckGo's filter. DuckDuckGo added an option in 2025 to hide AI-generated images:
You can also turn on Hide AI-Generated Images in DuckDuckGo's search settings, or bookmark noai.duckduckgo.com, which has the filter on by default and also turns off AI summaries. To use DuckDuckGo all the time, go to Firefox's Settings → Search and make it your default search engine.
DuckDuckGo says the filter won't catch everything. It relies on manually curated blocklists of sites known for AI images, so a new AI image on an ordinary site can still get through.
Add a blocklist to your own browser. The lists behind that kind of filter are available to you as well. Community lists such as the Huge AI Blocklist work with the Firefox add-ons uBlock Origin and uBlacklist, and they remove known AI image sites from search results. This takes a few minutes of setup, and the main benefit is that it lets you keep using the search engine you already have. The limit is the same as DuckDuckGo's: a list can only block the sites someone has added to it.
Some social platforms now have their own controls. They affect your feed on that platform, and they reduce AI content rather than removing it. Menu names change often, so check the platform's help pages if these steps don't match what you see.
Pinterest. Open the three-dot menu on a Pin and choose to see fewer AI Pins, if that option appears. You can also go to your settings and look under Refine your recommendations to turn down generative AI interests by category. These controls cover eligible image Pins in supported categories such as art, beauty, fashion and home decor.
TikTok. In the app, go to Settings and privacy → Content preferences → Manage Topics and move the AI-generated content slider down. This affects your For You feed only, so AI videos can still appear in search and other places.
Not every platform offers a control like these. Where there isn't one, muting or blocking accounts that post AI content is often the only thing the platform gives you.
If one particular site keeps annoying you, uBlock Origin's element picker can remove part of the page, such as an AI image widget or a sidebar. Right-click the element and choose Block element.
This hides whatever you pick, whether it's AI or not, and the rule can break when the site changes its layout. Use it for specific annoyances rather than as a general filter.
Each of the options above has a gap:
| Method | What it covers | What it misses |
|---|---|---|
| Firefox AI controls | Firefox's own AI features | All website content |
| DuckDuckGo's filter | DuckDuckGo image search | Other search engines and the rest of the web |
| Blocklists | Known AI sites | Sites not on the list, and AI images on ordinary sites |
| Platform controls | Parts of that platform's feed | Every other site |
| Element picker | The parts you choose | Anything else, and it can't tell what's AI |
None of them looks at each image on the page in front of you. That's the gap an add-on built for this can fill.
AI Detector & Blocker is a free add-on for Firefox and Chrome from Terran Foundry that checks the images, videos and text on each page you visit, then tags, blurs or hides what it flags. The checks run on your device.
To set it up for blocking:
With Hide selected, new images stay invisible until they've been checked, so you don't glimpse them first. A hidden image becomes a placeholder with Show and Why? buttons, which lets you reveal it or see the evidence. If a site doesn't work well with the add-on, you can switch it off for that site in the popup.
It can only act on evidence it can find, such as Content Credentials, metadata, platform labels, captions and hashtags. Most social networks strip the hidden data from uploaded images, so an unlabeled AI image in a feed can slip through. Combining it with DuckDuckGo's filter and your platform settings will catch more than any one of them alone. If you'd like to check a particular image yourself, we've also written about how to tell if an image is AI-generated. Using Chrome? See how to hide AI images in Chrome.