AI content credentials checker

Drop an image and it is checked for Content Credentials (the C2PA standard) and for the generation data that tools like Stable Diffusion and ComfyUI often leave inside a PNG file, along with mentions of well-known AI image tools.

  • Free
  • No sign-up
  • Runs in your browser
ai-content-credentials-checker

This looks for markers that some AI tools embed voluntarily. Many AI images carry none at all, and markers are often stripped when an image is re-saved, screenshotted or shared on social media. No mark found is not proof the image is real, and a mark found is a strong signal, not a certified guarantee.

100% private — the file is scanned in your browser and never uploaded.

How it works

Drop your image

Any JPG, PNG or WebP file.

Read what was found

A Content Credentials marker, embedded generation data, or neither.

Read the limits

A found marker is a strong signal; no marker found proves nothing on its own.

Some AI images say so; most don't

As AI image generators have become common, an industry standard called C2PA (Coalition for Content Provenance and Authenticity) has emerged to let tools record how an image was made, in a tamper-evident block of data called Content Credentials, shown to end users as a small "Cr" icon on platforms that support it. Separately, popular open tools for running Stable Diffusion, such as Automatic1111 and ComfyUI, commonly write the entire prompt and generation settings into the image file itself, in a way anyone can read. This tool checks for both.

What it looks for

  • C2PA Content Credentials: the markers and labels this standard embeds, used by Adobe Firefly, Microsoft's Bing Image Creator and Designer, and other major tools.
  • Stable Diffusion / ComfyUI generation data: the "parameters", "prompt" or "workflow" text chunk that these popular local tools commonly save directly inside a PNG file.
  • Mentions of known AI tools such as Midjourney, DALL·E, Adobe Firefly and others, found anywhere in the file's embedded text data.

Why the absence of a marker proves nothing

Many AI tools do not add any marker at all, and even when one is added, it is commonly lost the moment the image is re-saved, compressed, screenshotted, or uploaded to a social network that strips metadata, which most do. An image with no marker found here could still be entirely AI-generated; this check can only ever confirm a marker's presence, never its absence in a meaningful way.

Why a marker found is still not a certified guarantee

This tool looks for recognizable byte patterns; it does not cryptographically validate a C2PA manifest's signature the way a full C2PA verifier would, so it cannot confirm the credential has not been tampered with, only that something resembling one is present. Treat a positive result as a strong, useful signal worth investigating further, not as final proof.

Privacy

The file is scanned entirely in your browser; nothing is uploaded anywhere to run this check.

Frequently asked questions

How do I check if an image was made with AI?
Drop it here. The tool looks for Content Credentials (C2PA) markers and for generation data that tools like Stable Diffusion often leave in the file, and reports what it finds.
If no marker is found, does that mean the image is real?
No. Many AI tools add no marker, and markers are commonly stripped when an image is shared, screenshotted or re-saved. No marker found proves nothing on its own.
What is a C2PA Content Credential?
An industry-standard record embedded in a file that documents how an image was made or edited, shown to viewers as a small credentials icon on platforms that support it.
Does it check for Midjourney or DALL·E specifically?
It looks for mentions of those and other well-known tool names in the file's data, and separately for the C2PA standard that some of these tools use.
Can it tell me for certain that an image is AI-generated?
No. It reports markers it recognizes as a helpful signal, not a certified determination. Use it as one input among others, not a final verdict.
Is my image uploaded to check it?
No. Everything is scanned in your browser.

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