ComfyUI EXIF? The useful data is usually PNG workflow metadata
People search for “ComfyUI EXIF”, but ComfyUI usually stores generation data in PNG text chunks, not camera EXIF. Upload the original PNG to extract prompt/workflow JSON, node count, model names, seed, sampler, CFG, dimensions, and raw text chunks locally in your browser.
Real sample and parser output
| Bundled sample | ComfyUI / Stable Diffusion XL PNG from ComfyUI official examples. |
|---|---|
| Detected fields | PNG text chunks named prompt / workflow; full unsigned workflow JSON; AI-related metadata at low confidence because it is not signed. |
| Known limits | Prompt and workflow chunks are not cryptographically signed and are often stripped by social platforms, chat apps, and screenshots. |
Signals to Check
| prompt | ComfyUI node graph data and generation parameters serialized as JSON. |
|---|---|
| workflow | The graph structure that can often be loaded back into ComfyUI. |
| Model and sampler fields | Checkpoint/model file names, sampler, scheduler, steps, CFG, seed, width, and height when present. |
| Raw text chunks | Original tEXt/iTXt/zTXt values are retained for expert review and JSON export. |
Limits
- Unsigned metadata can be edited and should not be treated as legal proof.
- A missing workflow does not mean an image is not AI-generated.
- Screenshots and platform-compressed copies usually remove the PNG workflow chunks.
The PNG Parameter / Workflow Extractor is the primary page for the “comfyui exif” intent.
FAQ
Is ComfyUI metadata really EXIF?
Usually no. The important data is commonly in PNG text chunks such as prompt and workflow.
Can I recover the exact workflow?
Often yes for original PNG exports, but only if the workflow chunk was written and preserved.
Why is confidence lower than C2PA?
Because ComfyUI workflow metadata is unsigned and can be edited.