On-device evidence tool
Get Proof of My Image
Generate a unique digital fingerprint (SHA-256) of your photo to prove ownership without uploading it.
How it works
Get Proof of My Image
Generate a unique digital fingerprint (SHA-256) of your photo to prove ownership without uploading it.
Generate a unique digital fingerprint (SHA-256) of your photo to prove ownership without uploading it.
Drop your original image here safely.
Copy the unique digital code generated.
Use this code later to prove you are the real owner.
Drop an image to fingerprint
or click to browse · maximum 20 MB
100% Private: Hashing runs instantly inside your browser. Your image is never uploaded to our servers.
Digital fingerprint record
Local hash results
SHA-256 and MD5 fingerprints will appear here.
The original image is never retained.
A cryptographic hash helps identify an exact file and document evidence integrity. Editing or re-encoding an image creates a different hash.
About Local Photo Hashing & Digital Proof
What it does
This tool generates a cryptographic SHA-256 and MD5 fingerprint of your photo, fully offline. A hash is a one-way mathematical signature — change a single pixel and the hash changes completely. It is the same evidentiary standard used by law-enforcement digital-forensics labs to prove a file has not been tampered with.
Why privacy matters here
When you file a DMCA notice, an EU AI Act complaint, or a police report about a leaked or deepfaked photo, the platform's first defence is often: 'How do we know that's really your file?' A timestamped hash, generated before the abuse, is the cleanest answer. Because the hash is computed on your device, you keep the original; we never see it. That preserves both your privacy and the chain of custody for any future legal action.
How it helps victims of deepfake abuse
Survivors paste the resulting SHA-256 into our Takedown Notice generator, which embeds it directly into the legal PDF. Investigators, journalists, and content creators also use the fingerprint to prove they held a photo on a specific date, defeating the common 'you stole it from me' counter-claim used by image-based harassers and impostor accounts.
Frequently asked questions
- What is the difference between SHA-256 and MD5?
- SHA-256 is the modern cryptographic standard used in court and by Interpol. MD5 is included for compatibility with older platforms and image-matching databases. We generate both so your evidence is accepted everywhere.
- Does the hash reveal anything about my photo?
- No. A hash is one-way: nobody can reconstruct the image or any of its content from the 64-character string. It only proves that someone holding the original file can prove they hold it.
- Will the hash change if I edit, crop, or re-save the photo?
- Yes — any change, even one pixel or a re-encode, produces an entirely different SHA-256. That is precisely what makes it useful as tamper-evident proof of the exact file you owned.
- How do I prove the hash was generated on a specific date?
- Email the hash to yourself, post it to a public timestamped channel, or include it in the DMCA PDF this site generates — the PDF carries an internal generation timestamp.