THE IMAGE GUIDEBOOK

How to Check If an Image Is AI Generated

Learn how to inspect AI metadata clues, understand Content Credentials and distinguish file evidence from detector predictions. Missing metadata is inconclusive.

Open AI Image Checker ↗

AI Image Checker — Image Compress Tool

Start with the original image file and inspect its metadata for declared AI tools, saved generation parameters or Content Credentials. Then investigate the source and context. No single missing tag, visual oddity or detector score can establish whether an image is real.

KNOW YOUR IMAGE.

AI Image Checker

Inspect image metadata for AI-generation clues, saved workflows and credential markers. Metadata evidence only: no pixel-model predictions or AI probability scores.

Static JPG, PNG or WebP · up to 20 MB, 8 megapixels and 8192 px per edge. Read-only checks; no image uploads.

Choose an image to begin.

What this AI image checker does

This version reads metadata locally. It looks for recognised generator tags, structured generation parameters, saved ComfyUI workflows and selected credential markers. It does not run a pixel-detection model, provide an AI probability or validate credential signatures.

Use the original file

Ask for the original download or export when available. Screenshots, social-media copies, compression and re-saving can remove metadata. A file without useful metadata may be a camera photo, an AI image or an edited combination.

Interpret the result carefully

  • AI-related metadata found: inspect the named field. It may describe a tool or workflow, but metadata can be copied or changed.
  • Unable to determine: no recognised clues were found in the inspected fields. This is not a verdict that the image is human-made.
  • Credential marker found: a possible provenance container or reference was detected. This tool has not validated its signature, signer or claims.

Metadata evidence versus model predictions

Metadata inspection reports information embedded in the file. A pixel-based detector instead estimates origin from learned visual patterns. Those are different kinds of information and should be labelled separately. This checker’s model result is always Not run; it does not turn metadata matches into percentages.

What are Content Credentials?

Content Credentials can record information about creation and editing history. Proper validation checks signatures and the relationship between the record and the file. Their presence does not establish whether the depicted event really happened, and their absence does not imply a fake. This checker identifies selected markers only.

What else can I check?

Look for the earliest known source, the creator’s explanation and corroborating evidence. Compare alternate versions for differences. Visual inconsistencies can suggest questions to investigate, but they are not reliable proof on their own. Our tools do not perform a reverse-image search or contact external services with your image.

Can AI detectors be wrong?

Yes. A model’s performance can depend on its training data, the generator used and later editing. Treat a detector result as an estimate with limitations, not a guarantee. Avoid presenting an untested numeric score as a probability.

Save the evidence, not a verdict

The downloadable JSON report records the inspected fields and limitations. It may contain private names or generation prompts, so review it before sharing. Your image stays unchanged and is not uploaded.

Open Image Checker ↗

Open Image Compare ↗

Read more: Content Authenticity Initiative FAQs and research on AI image detector generalisation.

HOW IT WORKS

Behind the result

This is a rule-based inspection of embedded metadata, separate from any model that predicts origin from pixels.

Read supported metadata

Bounded parsing examines common EXIF text, PNG text including supported compressed fields, and selected XMP properties. Unsupported or excessive metadata is reported as a limitation.

Identify specific clues

The checker looks for recognised AI-associated software tags, structured generation parameters, ComfyUI workflow patterns and AI digital-source declarations. Ordinary mentions in image descriptions are not treated as generator evidence.

Report credential markers

Selected C2PA-related markers are reported as present but not validated. Signatures, signer trust, manifest claims and external provenance are not checked.

Keep uncertainty visible

No pixel detection model runs. No score is calculated. Missing clues produce Unable to determine, while detected metadata is labelled as evidence that can be changed or copied.

Explore the details: How Content Credentials workC2PA specifications

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