What "completely private" actually means on Facebook
Facebook does not have a single "make private" button that locks down everything at once. Instead, you control privacy in layers: who sees your posts, who can find your profile, who can message you, and what information appears on your profile itself. A completely private profile means strangers cannot see your photos, posts, or friend list, and cannot contact you without your permission — but Facebook still collects data about your activity for its own use.
The trade-off is real. The more you restrict, the less useful Facebook becomes for people who actually know you. If you set your profile to the strictest settings, old friends cannot find you, and you cannot be tagged in group photos without your approval. Some people find this worthwhile; others decide the privacy gain is not worth the friction. This guide walks you through each setting so you can choose what matters to you.
Key Takeaways
- Your profile visibility, friend list, and past posts are controlled separately — you need to change all three to be truly private.
- The "Who can see your posts?" setting controls new posts going forward, but does not change posts you made before you changed the setting.
- Changing your friend list to private prevents strangers from seeing who you know, but does not prevent friends from telling others about you.
- Facebook's data collection for advertising happens regardless of your privacy settings — privacy controls only affect what other people see.
- You can review and delete old posts in bulk, but Facebook keeps a copy in its archive even after you delete them from your profile.
Lock down who can see your profile and posts
Open Facebook on a computer or phone and go to your profile by clicking your name at the top. Click the three dots next to "Edit profile" and select "Settings and privacy," then "Settings." On the left side, click "Privacy."
You will see three main controls. First, "Who can see your posts?" — change this from "Public" to "Friends only." This applies only to posts you make from now on. Second, "Who can see your profile?" — also change this to "Friends only." This hides your profile from people who are not your friends, though your name will still appear in search results. Third, "Who can look you up using the email address you provided?" and "Who can look you up using the phone number you provided?" — change both to "Friends only" so strangers cannot find you by searching your contact information.
Make your friend list private
Go back to your profile and click the "Friends" tab. Click the three dots next to "Friends" and select "Edit the privacy of your friend list." Choose "Only me" from the dropdown. This hides your entire friend list from everyone except you — even your friends cannot see who else you are connected to.
Be aware that this does not prevent your friends from telling others about you or sharing your profile link. It only prevents strangers from discovering your social circle by browsing your profile.
Review and restrict who can contact you
In Settings, click "Privacy" again and scroll to "Who can message you?" Change this to "Friends only." This prevents strangers from sending you direct messages. If you want to go further, you can also change "Who can send you friend requests?" to "Friends of friends" — though this is less restrictive than "Friends only" because friends of friends are still strangers to you.
Note that people can still see your profile name and send you a friend request even if messaging is restricted. Accepting or declining the request is up to you.
Handle posts you made before changing your settings
Changing your privacy settings does not automatically make old posts private. Posts you shared as "Public" before you changed your settings stay public unless you change them individually. To fix this, go to your profile, click the three dots next to "Edit profile," and select "Activity log." Filter by "Posts" and "Public." You will see every public post you ever made.
You can change each post's privacy one at a time by clicking the audience icon (the globe or lock symbol) on the post and selecting "Friends only" or "Only me." If you have years of posts, this is tedious. Some people delete old posts instead — click the three dots on the post and select "Delete." Facebook keeps a copy in its archive, but it will no longer appear on your profile or in search results.
Limit what information appears on your profile
Go to your profile and click "Edit profile." Review each section — your bio, work history, education, relationship status, phone number, email address, and hometown. Delete or hide anything you do not want strangers to see. Click the audience icon next to each item to change who can see it. Set sensitive information like your phone number and email to "Only me" or delete it entirely.
Pay special attention to your "About" section and any links you have posted. Remove old contact information, workplace details, or anything that could help someone identify or locate you offline.
Turn off activity status and limit tag permissions
In Settings under "Privacy," find "Who can see your active status?" and change it to "Only me." This prevents people from knowing when you are online. You will also not see when others are active, which is a trade-off some people accept for the privacy gain.
Still in Settings, click "Tagging" and change "Review tags people add to your posts before they appear on your profile?" to "On." This forces you to approve any photo or post someone tags you in before it shows on your profile. It is an extra step, but it prevents embarrassing or unwanted content from appearing on your profile without your knowledge.
Understand what privacy settings do not control
Facebook's privacy controls only affect what other people see. They do not stop Facebook from collecting information about your behavior — what you click, what you search for, how long you spend on each post, and what device you use. This data is used to build an advertising profile of you, which Facebook sells access to advertisers. Your privacy settings do not change this.
If you want to limit Facebook's data collection, go to Settings, click "Apps and websites," and review what third-party apps have access to your account. Remove any you do not recognize or use. You can also go to Settings, click "Ads," and change "Ad preferences" to see what categories Facebook has assigned to you, though you cannot opt out of being categorized entirely.
Frequently Asked Questions
If I set my profile to private, can old friends still find me?
Only if they already know your exact name and search for it. Your profile will not appear in general searches or in "People You May Know" suggestions. Friends who already have you added will still see you in their friend list and can message you if messaging is set to "Friends only."
What happens if I delete a post — is it really gone?
It disappears from your profile and from other people's feeds, but Facebook keeps a copy in its servers. You cannot retrieve it yourself, but Facebook can access it if required by law. If you want to be thorough, delete posts rather than just making them private.
Can I make my profile private but still use Messenger?
Yes. You can set your profile to "Friends only" and your messaging to "Friends only" independently. People who are not your friends cannot see your profile or message you, but your friends can still reach you through Messenger.
Does making my profile private stop Facebook from showing me ads?
No. Facebook shows you ads based on your activity and the data it collects about you, not based on your privacy settings. Privacy controls only affect what other people see, not what Facebook knows about you.
If someone is already my friend and I want to unfriend them, will they know?
Facebook does not notify them directly, but they may notice if they try to visit your profile or look for you in their friend list. There is no way to unfriend someone without them potentially finding out.