Verified credential
A signed C2PA claim validates and can describe origin, tools and edits.
Check AI watermarks and content credentials
Inspect images and text for verifiable provenance, metadata hints, and hidden characters. Free and private in your browser.
Drop an image here
JPEG, PNG or WebP • up to 25 MB
Your file stays on your device. Analysis runs locally in your browser.
After the check
✓ No upload✓ No account✓ Official C2PA SDK✓ No scan history
Every check, and what it can actually establish
Each tool answers a narrow question honestly rather than producing one vague score. Pick the one that matches what you need to know.
Signed provenance inspection
Free C2PA Checker for Images
Validate C2PA Content Credentials in JPEG, PNG, and WebP images privately in your browser. Inspect the signer, claim generator, recorded actions, ingredients, and validation issues.
Content provenance made legible
Content Credentials Checker
Read and verify Content Credentials without uploading anything. Inspect signed provenance, edit history, digital source types, signer identity, and ingredient chains in your browser.
Evidence, not a score
AI Watermark Checker
Check images for signed provenance and AI-related metadata in your browser, and learn exactly which AI watermarks can be verified independently and which cannot.
Provider strings and editable hints
AI Image Metadata Checker
Inspect EXIF, IPTC, XMP, GPS, and AI-provider metadata in JPEG, PNG, and WebP images locally. See which generator strings are present without uploading your photo.
Every field, nothing uploaded
EXIF Viewer
View EXIF, IPTC, XMP, and GPS data from JPEG, PNG, and WebP photos directly in your browser. See camera, lens, exposure, timestamps, and location without uploading the file.
Unicode inspection
Hidden Character Checker
Find zero-width spaces, joiners, directional controls, soft hyphens, and byte order marks in pasted text. Every character is named with its code point and position, locally in your browser.
Clean text, kept intact
Invisible Character Remover
Remove zero-width spaces, byte order marks, soft hyphens, and other invisible Unicode characters from text. Runs in your browser, keeps the characters your language needs.
Observable artifacts only
Claude Watermark Checker
Inspect text for observable Unicode artifacts and understand why no third-party tool can verify a Claude statistical watermark or produce a reliable Claude probability.
A careful answer
Does Claude Watermark Text?
A careful answer on Claude text watermarking: what statistical watermarking is, what Anthropic has published, why hidden Unicode is a myth, and why no third-party detector is reliable.
Provider-controlled watermark
SynthID Checker
How Google SynthID differs from C2PA, what can be inspected locally, and why independent SynthID verification requires Google's own detection flow.
Understand the result
Signed provenance and editable metadata are not the same. Results are grouped by the strength of the evidence instead of producing a vague AI percentage.
Validation issue
A credential exists, but a signature, hash or trust check reports a problem.
Metadata hint
Editable EXIF, IPTC or XMP strings mention software or a provider.
No evidence
Nothing verifiable was found. That is not a human-made verdict.
Guides
Longer explanations of how provenance works, and where the popular shortcuts go wrong.
How to tell if an image is AI-generated
A practical, honest method for checking whether an image was generated by AI: what provenance can prove, what metadata hints at, why visual tells fail, and when to stop.
Does ChatGPT watermark the images it generates?
What OpenAI attaches to generated images, why the marking disappears so easily, and how to check any specific image yourself instead of relying on a general claim.
What are Content Credentials?
Content Credentials explained without jargon: what they record, how the signing and binding work, what they prove, what they do not prove, and why they disappear so easily.
The supposed signs that text was written by AI
Em dashes, hidden characters, 'delve', and clean formatting are widely cited as AI tells. Here is why each one fails, and what actually distinguishes machine-written text.
Private by design
The browser is the boundary. Your files, text, metadata, and results stay in the current tab.
Local file bytes
Your image is opened through browser APIs; there is no upload endpoint.
Ephemeral previews
Preview URLs live only in the tab and are revoked when replaced or closed.
No sensitive analytics
Filenames, text, metadata, manifests and results are excluded from analytics and advertising.
Memory cleaned
C2PA Reader and SDK resources are disposed after every analysis.
Frequently asked questions
Can this tool prove that a file was made by AI?
No. It reports verifiable C2PA provenance when present and labels ordinary metadata as hints. Missing evidence never proves human authorship, and no AI percentage is produced.
Does my image or text leave my device?
No. File bytes, metadata, manifests, pasted text and scan results are processed in your browser. There is no upload endpoint on this site, and none of it reaches analytics or advertising.
What is a valid Content Credential?
It is a cryptographically signed provenance record whose structure, signature and binding to the file all validate. It can describe tools, actions and source types, but it does not guarantee the truth of what an image depicts.
Why might a real AI-made image show no credential?
Screenshots, social networks, editing, export settings and format conversion all remove C2PA manifests and ordinary metadata. An empty result is the normal case on the open web.
Does the text checker detect Claude's watermark?
No. Claude's described watermark concerns statistical word-selection patterns, not hidden Unicode. This tool reports only directly observable characters, and no public detector for statistical text watermarks exists.
Is AI Origin Check free?
Yes. There is no account, no usage limit and no paid tier. The site is funded by advertising, which is kept out of the checker, the results and the policy pages.