What blocking ads on Facebook does and doesn't do
Blocking ads on Facebook reduces the number of advertisements you see in your feed, but it does not stop Facebook from collecting data about you. The platform gathers information about your behavior, location, contacts, and interests whether ads appear on your screen or not. Blocking ads changes what you see, not what the company knows.
Facebook's ad-blocking options fall into two categories: hiding individual ads as you scroll, and using browser tools to prevent ads from loading at all. The first method is built into Facebook itself. The second requires software on your device. Neither prevents Facebook from tracking your activity or selling access to advertisers — they only hide the final result.
Key Takeaways
- Facebook's built-in ad preferences let you hide ads from specific advertisers or topics, but this does not stop the platform from collecting data about you.
- Browser extensions like uBlock Origin can block ads from displaying, but Facebook still tracks your behavior and sells that information to other advertisers.
- Hiding ads reduces clutter in your feed but does not change Facebook's data collection practices or your privacy settings.
- If your goal is to limit what Facebook knows about you, blocking ads alone will not achieve that — you need to change your privacy settings and limit app permissions instead.
How to hide ads using Facebook's built-in controls
Open Facebook on your computer or phone and scroll past an ad. On desktop, click the three dots in the top right corner of the ad. On mobile, tap the three dots. A menu will appear with options including "Hide ad" and "See fewer ads like this." Selecting either one removes that ad from your feed and tells Facebook you do not want to see similar content.
You can also manage ads by advertiser. Go to Settings (the gear icon on desktop, or the menu icon on mobile), then select "Ads." Click "Ad Preferences" and you will see a list of advertisers who have targeted you. Click any advertiser name to see why they targeted you and choose "Remove" to stop seeing their ads. This does not prevent the advertiser from collecting data — it only hides their ads from your view.
To adjust what topics trigger ads, go to Settings > Ads > Ad Preferences > Categories. You will see topics like "Technology," "Travel," or "Health." Unchecking a category tells Facebook not to show you ads about that topic, but the platform still knows you are interested in it based on your behavior.
Using browser extensions to block all ads
uBlock Origin is a free browser extension that blocks most ads across the internet, including Facebook ads. Install it from the Chrome Web Store, Firefox Add-ons, or Edge Add-ons depending on your browser. Once installed, it runs automatically and prevents ads from loading on any website you visit.
Adblock Plus is another option, available for Chrome, Firefox, Edge, and Safari. It works similarly to uBlock Origin but allows some ads through by default (called "acceptable ads"). You can turn this off in settings if you want to block everything.
Both extensions reduce clutter and can speed up page loading slightly because ads do not have to read. However, they do not change what Facebook knows about you. The platform still tracks clicks, scrolls, time spent on posts, and which profiles you visit. Advertisers still bid on access to your data — they just do not see their ads displayed to you.
Why ad-blocking does not protect your privacy
Facebook's business model is built on data collection, not ad display. The company makes money by selling access to your information to advertisers, not by charging you to use the platform. Hiding ads is like covering your eyes during a security camera feed — the camera still records, but you just do not see the playback.
When you use Facebook, the platform collects: every post you like, every profile you visit, every link you click, how long you spend on each page, your location (if you allow it), your contacts, your search history within Facebook, and information from third-party websites that use Facebook's tracking code. This data collection happens in the background regardless of whether ads appear in your feed.
Advertisers bid on access to this data to reach people like you. If you block ads, an advertiser still knows you exist and still knows your interests — they just cannot show you their ad. Your information remains for sale to the next advertiser who wants it.
What actually limits what Facebook collects
If your goal is to reduce data collection rather than just hide ads, you need to change your privacy settings. Go to Settings > Privacy and limit who can see your posts, who can contact you, and who can look up your profile. Go to Settings > Apps and Websites and remove access for apps you no longer use — many apps share data with Facebook even after you stop using them.
Turn off location tracking by going to Settings > Location and selecting "Off." Disable ad targeting based on your activity off Facebook by going to Settings > Ads > Off-Facebook Activity. This does not stop Facebook from collecting the data, but it prevents the company from combining it with information from other websites.
The most effective privacy protection is to limit the time you spend on Facebook and the information you share. Blocking ads makes the experience less cluttered, but it does not address the underlying data collection that funds the platform.
Ad-blocking on mobile versus desktop
Blocking ads works differently on phones and tablets than on computers. On desktop, browser extensions like uBlock Origin work across all websites, including Facebook. On mobile, most browsers do not allow extensions, so you are limited to Facebook's built-in ad controls.
If you use Facebook's mobile app, you cannot install a browser extension at all. Your only option is to hide individual ads or adjust ad preferences within the app. If you use Facebook through a mobile browser (Safari on iPhone, Chrome on Android), you may be able to install an extension depending on your browser — Chrome on Android supports some extensions, but Safari on iPhone does not.
For the most control on mobile, use the mobile web version of Facebook in your browser rather than the app. This gives you slightly more options, though still fewer than desktop.
What happens when you block ads from a specific advertiser
When you select "Remove" next to an advertiser in your Ad Preferences, Facebook stops showing you that advertiser's ads. However, the advertiser still has access to data about you if you have visited their website or used their app. They can still target you on other platforms like Instagram, TikTok, or Google.
Removing an advertiser from your Facebook feed does not delete your information from their database or prevent them from collecting more. It only tells Facebook not to show their ads to you. If you want to limit what an advertiser knows about you, you would need to visit their privacy settings directly and opt out of data collection there — a process that varies by company.
Frequently Asked Questions
Does blocking ads stop Facebook from selling my data?
No. Blocking ads only hides advertisements from your view. Facebook still collects information about your behavior, interests, location, and contacts. The platform sells access to this data to advertisers whether or not you see their ads. To limit data collection, change your privacy settings and turn off off-Facebook activity tracking.
Will ad-blocking extensions slow down Facebook?
Slightly. Extensions like uBlock Origin prevent ads and tracking code from loading, which can reduce page load time and use less bandwidth. The difference is usually small — a few hundred milliseconds — but noticeable on slower connections. The trade-off is that you see fewer ads, which most people consider worth it.
Can Facebook tell if I am using an ad blocker?
Facebook can detect that ads are not loading, but it cannot identify which extension you are using or force you to disable it. Some websites block access to users with ad blockers, but Facebook does not. You can use an ad blocker on Facebook without losing access to your account.
If I hide ads from an advertiser, will they know?
No. The advertiser does not receive a notification that you hid their ad. They only see aggregate data about how many people saw their ad and how many clicked it. Hiding an individual ad has no effect on their data or their ability to target you on other platforms.
Should I use an ad blocker or Facebook's built-in controls?
That depends on your priorities. Facebook's built-in controls let you fine-tune which ads you see and which advertisers to avoid. Browser extensions block all ads automatically but give you less control. Many people use both — an extension to block most ads, plus Facebook's controls to hide specific advertisers or topics.