FREE TOOL
Compare Two Faces — See How Similar They Are
Upload two photos and our AI checks face similarity in seconds — entirely in your browser. Nothing is ever uploaded to our servers.
- 100 % private — runs on your device, no server uploads
- Detects the same person across different photos, ages, or lighting
- Works with selfies, ID photos, social media pictures, and more
- Instant results — no account, no sign-up required
Face analysis runs entirely on your device using the Human.js model library.
Drop a photo here or click to browse
JPG · PNG · WEBP
Drop a photo here or click to browse
JPG · PNG · WEBP
Photos are processed entirely in your browser — nothing is uploaded to our servers.
How Face Comparison Works
Upload Two Photos
Drop or select a clear photo for each person. JPG, PNG, and WEBP are supported. Best results with forward-facing photos.
AI Analyses the Faces
Our on-device AI locates and maps each face, then converts it into a unique numerical fingerprint based on 128 facial features.
Get a Similarity Score
The two face fingerprints are compared and you receive a 0–100 % similarity score with a plain-English verdict in seconds.
When People Use Face Comparison
Verify Online Identities
Check whether a social-media profile photo matches a different photo of the same person — useful before meeting someone from a dating app or marketplace.
Spot Fake or Stolen Photos
Compare a suspicious profile photo against a known real photo to see if someone is impersonating another person online.
Reconnect with Lost Contacts
Compare an old photo to a newer one to confirm you have found the right person across different social networks or time periods.
Research & Journalism
Journalists and researchers can cross-reference faces in photos to establish whether the same individual appears across multiple sources.
Family & Genealogy
Curious whether an old family photograph is the same relative as a newer one? Compare the faces for a quick similarity check.
Fun Celebrity Comparisons
See how similar your face is to a friend, celebrity, or historical figure. Purely for fun — no data leaves your device.
Understanding the Similarity Score
| Score | Verdict | What it means |
|---|---|---|
| 85 – 100 % | Almost certainly the same person | Very strong match across key facial landmarks. |
| 70 – 84 % | Very likely the same person | Strong resemblance — minor variation due to age or lighting. |
| 55 – 69 % | Possibly the same person | Some overlap, but not conclusive without more data. |
| 40 – 54 % | Unlikely the same person | Limited similarity — probably different individuals. |
| 0 – 39 % | Different people | Very low similarity — faces do not match. |
Scores are not definitive proof of identity. Accuracy varies with photo quality, angle, lighting, and age differences. Use results as one indicator among several, not as a standalone determination.
Frequently Asked Questions
Are my photos uploaded to your servers?
No. Face comparison runs 100 % on your device using WebGL. Your photos never leave your browser. No images are transmitted, stored, or logged.
What makes a good photo for comparison?
Clear, forward-facing photos with good lighting work best. Avoid heavy filters, extreme angles, sunglasses, or masks. The face should be the main subject and not too small in the frame.
How accurate is the face comparison tool?
Accuracy depends heavily on photo quality. With clear, well-lit, forward-facing photos the tool performs well. However, it is not infallible — significant age differences, unusual angles, or low resolution can reduce accuracy.
Can I compare two photos of the same person at different ages?
Yes, though large age differences (e.g. childhood vs. adulthood) will produce lower similarity scores because facial structure changes considerably over time.
Is this tool free to use?
Yes — face comparison is completely free. No account, subscription, or credits are required.
Can I use this to identify strangers from photos?
This tool compares two specific photos you provide — it does not search the internet or any database. It only tells you how similar two faces are to each other.
Want to Search the Web for a Face?
Use our reverse image search tool to find where a photo appears online — social profiles, news sites, and more.
Try Reverse Image Search