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Image Verification

Verify image authenticity

Upload any image to check if it has been signed with CredLink. View provenance information, signing date, and confirm it hasn't been tampered with.

Drop an image here or click to upload

Supports JPEG, PNG, WebP, and TIFF up to 50MB

Two Verification Modes

CredLink supports verification whether the C2PA metadata is present or has been stripped by platforms.

Mode 1: Embedded C2PA Manifest

When C2PA metadata is still present in the image file.

  • Reads C2PA manifest directly from image EXIF/XMP data
  • Validates cryptographic signature chain
  • Full provenance chain available

Mode 2: Hosted Proof Lookup

When platforms have stripped the C2PA metadata (social media, CDNs).

  • Computes perceptual hash of uploaded image
  • Matches against CredLink's hosted proof database
  • Returns signer, timestamp, and proof URL if match found

What You Need for Hosted Verification (Mode 2)

Option A

Upload the image file directly

Option B

Provide the CredLink proof ID or URL

Option C

Provide the image's SHA-256 hash

Frequently Asked Questions

Is this free to use?
Yes, image verification is completely free. You don't need an account to verify images. Anyone can check if an image has been signed with CredLink.
What if the image has been resized or compressed?
Our perceptual hashing technology can match images even after they've been resized, compressed, or had their format changed. We achieve over 95% accuracy on modified images.
What if the image metadata is stripped?
Our remote manifest system stores verification data separately from the image file. Even if platforms strip metadata, you can verify authenticity using our hosted verification portal by uploading the image or using its unique identifier.
What does "No Signature Found" mean?
It means the image wasn't signed with CredLink or we couldn't find a matching signature in our database. This doesn't prove the image is fake - it simply wasn't registered with our platform. The image could be authentic but unsigned.
How do I sign my own images?
Create a free account to start signing your images. We offer a 7-day free trial with full access to all Pro features, including API access for automated signing.

Want to sign your images?

Start protecting your visual content with cryptographic proof of authenticity.

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