TRACETRACE / COMPARE TWO FACES
FACE COMPARISON · FREESAME
PERSON?
Two photos in, one answer out. Upload the profile picture and the frame from your video call, the listing photo and the ID they sent, or any two pictures of the same “person”. Trace compares the faces on its own engine and gives you a similarity score from 0 to 100. No search, no credit, nothing stored.
SHORT ANSWER
You do not need a search to know whether two photos show the same person. Trace finds the face in each photo, measures the two faces and returns a similarity score: 90 and above is very likely the same person, below 70 is probably not. It is free, needs no account beyond the one the panel gives you, and deletes both photos the moment the score is calculated.
IN THIS GUIDE
HOW IT WORKS
- Pick the two photos. A profile picture and a frame from a video call, a dating photo and a tagged photo, a seller's avatar and the ID card they sent. Screenshots are fine.
- Let Trace frame the faces. Each face is found and framed automatically in your browser. If a photo has several people, tap the one you mean; the others are covered before anything leaves your device.
- Read the similarity score. The two crops go to Trace's face engine, are measured, compared and deleted. You get a number and a plain-language reading of it.
WHEN TO USE IT
- The video call. The person on the call looks a little different from the photos. Take a frame and compare: a score in the 90s settles it, a score in the 30s tells you the photos are not theirs.
- The second account. Someone with the same name and a similar face has appeared on another platform. Compare the two avatars before you decide it is the same person.
- The seller or landlord. The profile photo and the document photo should be the same face. If they are not, stop before the deposit.
- Your own lookalike. Somebody says an account is yours. Compare the avatar with your own photo and you have a number to point at.
READING THE SCORE
- 90–100 — very likely the same person. Two clear photos of one person land here almost every time.
- 80–89 — probably the same person. Common when one photo is older, smaller or taken at an angle.
- 70–79 — could be the same person, not enough to be sure. Try another pair of photos before deciding.
- Below 70 — probably two different people. Lookalikes and relatives usually land in the 40s to 60s.
The score is the same measurement the face search uses for its results, so a 90 here means what a 90 means on a result page. It describes how closely two faces resemble each other; it is never proof of identity.
WHAT IT CANNOT TELL YOU
- Whether the person exists. Two AI-generated photos of the same invented face compare perfectly. To learn whether a face has any public history, run a search; the result page then says whether there is a public trace at all.
- Who they are. Comparison uses only the two photos you give it. Names, accounts and the places a face appears come from the search, which costs one credit because it queries the public web.
- Anything from a bad photo. A face under 80 pixels, a dark room, a side profile or a heavy filter lowers the score for reasons that have nothing to do with identity. When the score is low and a photo is poor, get a better photo before you draw a conclusion.
FREE, AND NOTHING IS KEPT
Comparison costs nothing and uses no credits. Both crops are sent to Trace's own face engine, compared and deleted immediately; they are not searched, not indexed and not shared with any third party. There is a daily limit per account so the engine stays available for everyone. If you then want to know where else a face appears, one credit runs the full search — and if that search finds nothing, the credit comes back.
FAQ
Is the face comparison free?
Yes. It uses no credits and runs no search: the two crops go to Trace's own face engine, are compared, and are deleted straight away. There is a daily limit per account so the engine stays available for everyone.
How accurate is a face similarity score?
It depends on the photos more than on the model. Two clear, front-facing, well-lit photos give a reliable score. Lighting, angle, age, make-up, glasses and heavy filters all move it. A low score on a blurry or edited photo says less than a high score on two clear ones.
Can it tell if a photo is AI-generated?
No. Comparison tells you whether two faces belong to the same person; it does not tell you whether that person exists. For that, run a search: an AI-generated face usually appears nowhere on the public web, which the result page reports as no public trace.
Does the other person find out?
No. Nothing is searched, nothing is published and no profile is touched. The photos never leave the comparison; they are not indexed, not stored and not sent to any third party.
What is the difference between comparing and searching?
Comparing answers “are these two photos the same person?” using only the two photos you give it. Searching answers “where else does this face appear online?” and costs one credit, because it queries the public web. Use the comparison first when you already have two photos; search when you need to know who else is using the face.
SOURCES
- Federal Trade Commission — New FTC Data Show People Have Lost Billions to Social Media Scams, April 2026 (2025 data: $2.1 billion in reported losses from scams starting on social media; nearly 60% of romance scam loss reports began on a social platform).
Responsible use. Trace is a verification tool. Only compare photographs you have the right to use — your own, or with the subject's consent. A similarity score describes how closely two images resemble each other and is not proof of identity. Do not use it to make decisions about employment, housing, credit or anything else the law protects.
TWO PHOTOS. ONE NUMBER. THIRTY SECONDS.
Compare the faces for free, and run the full search only if you need to know where else the face appears.