PNG Parameter and ComfyUI Workflow Extractor
Upload an original PNG and extract ComfyUI prompt/workflow data, AUTOMATIC1111 parameters, Stable Diffusion settings, and NovelAI clues from PNG tEXt, iTXt, and zTXt chunks. Results are searchable, safe to copy, and exportable as JSON.
Upload a PNG to extract parameters
How to use
- Prefer PNG files exported directly by the generation tool, not screenshots or social-media saves.
- The summary shows whether ComfyUI, A1111, or NovelAI structures were found.
- Raw data preserves original text chunks; large workflows are collapsed by default.
Fields shown
| ComfyUI | prompt, workflow, node count, first class_type, and raw JSON. |
|---|---|
| A1111 / Stable Diffusion | Positive prompt, negative prompt, steps, sampler, CFG, seed, size, model/hash. |
| NovelAI | NovelAI-related text structures are detected and retained for review. |
Scope & limits
- Unsigned PNG parameters can be manually edited and do not prove origin by themselves.
- No text chunks does not mean the image is not AI-generated; many export and compression paths strip parameters.
- Safe copy skips prompt/workflow-style sensitive content by default; full export asks for confirmation.
FAQ
- Why do people call ComfyUI metadata EXIF?
- Many users call any saved generation info "EXIF", but ComfyUI usually writes PNG text chunks or workflow JSON, not camera EXIF.
- Does it support compressed zTXt?
- Yes. The browser parser reads PNG tEXt, iTXt, and zTXt, and displays text when it can be decompressed.
- Does no parameters mean it is not Stable Diffusion?
- No. Parameters may have been stripped, or the tool may not write PNG text chunks at all.