On iPhone
- Screenshot the profile photo and crop out the app interface.
- Open the Google app, tap the camera (Lens) icon, and choose the screenshot.
- Scroll the "Exact matches" and "Visual matches" results.
- Repeat at tineye.com in Safari using the upload button.
Private search. They are never notified.
On Android
- Screenshot and crop the photo.
- Open Google Photos, select the screenshot and tap Lens.
- Check exact matches first, then visual matches.
On a computer
Go to images.google.com, click the camera icon and upload or drag in the image. Try TinEye and Bing Visual Search too; each indexes different sites, so a photo missed by one is often found by another.
Reading the results
- No results: common for normal people, whose photos are on private accounts. Not a red flag by itself.
- Same name, older accounts: reassuring.
- Different name: the photos are stolen. Stop.
- Model, influencer or stock-photo sites: stolen.
- "Scammer photo" sites or forums: others have already been targeted with these photos.