A private account narrows visibility; it does not erase you. Instagram and TikTok offer a single toggle, Facebook demands post-by-post audience management, and all three leave a public-facing core that anyone can see — even without logging in.
- Instagram and TikTok: one private-account switch; Facebook relies on per-post audiences and a bulk “Limit Past Posts” tool.
- Always public: name, username and profile photo on every platform.
- Hidden trap: existing Instagram followers stay after the switch and must be removed or blocked.
- AI training: Meta will use public adult posts and comments for generative AI, with an opt-out deadline of October 30.
Instagram: one toggle, three exceptions
On Instagram, open Profile, tap the Menu, choose Who can see your content, then Account privacy. Enable Private account and confirm with Switch to private.
Business profiles cannot go private; revert to a personal account first. Existing followers are not removed, so delete or block anyone you want shut out. And anyone on Instagram or Threads can still see which public accounts you follow and which public accounts follow you.
Private posts vanish from Explore, hashtags and external search, and cannot be downloaded, remixed or embedded. Accounts for under-18s are private by default; under-16s need parental permission to go public, while 16- and 17-year-olds can switch unless supervision is active.
Facebook: no master switch
Facebook has no single “private profile” button. Every post carries an audience selector — Public, Friends, Only me — and the choice applies only to that post; later posts use your default audience.
The biggest one-click gain is Limit Past Posts: profile photo, Settings & privacy, Settings, Posts, Limit Past Posts. It turns earlier public posts into Friends-only, but cannot be undone with one click, and tagged people plus their audiences may still see the content.
Run Privacy Checkup to control who sees your phone, email, birthday and relationship status, who can send friend requests, and whether people can find you by phone or email.
Your name, gender, username, user ID number, profile photo and cover photo stay public, along with age range, language, country and follower count. Posts and comments in public groups or pages remain public regardless of profile settings.
TikTok: stricter defaults for teens
On TikTok, open Profile, tap Menu, then Settings and privacy, Privacy and Private account. Approved followers alone can see your videos, livestreams, bio, likes and follower lists. Duet, Stitch, stickers, downloads and Stories additions are blocked.
Your name, username and photo stay visible to anyone. Accounts for 13- to 15-year-olds and 16- to 17-year-olds are private by default. The youngest group has no direct messages and no video downloads, and under-18s cannot have their account recommended to others. TikTok has treated under-16 accounts as private by default since an August 2021 policy note.
What remains public — and Meta’s AI expansion
Names, usernames and profile photos remain open on all three services. Instagram bios are visible to everyone, while TikTok hides descriptions from non-followers. Comments in public spaces stay public, and screenshots defeat any switch. Facebook itself warns that other people can make public information you have shared, even if you have not.
“We’ll use public information such as public posts and comments from accounts of people aged 18 or older on the basis of legitimate interests.” — Meta’s updated Privacy Centre notice
That notice matters because Meta is expanding generative AI training. Users who do not want their public posts and comments used this way can object through the Privacy Centre before the changes take effect on October 30; many users have not received direct notification.
A private toggle also does not stop credential theft. A unique password in a password manager and two-factor authentication that does not rely solely on SMS protect the account itself, not just its posts.
The strongest privacy gains come from maintenance the toggle never performs: pruning old followers, limiting past Facebook posts, and replacing a highly recognizable profile photo. Ten minutes on those tasks can matter more than flipping an account to private.