AI image metadata viewer
Most AI image tools quietly embed the exact recipe used to create a picture inside the file itself. Stable Diffusion writes the full prompt, seed, steps, CFG, and sampler into a PNG text chunk; some tools use JPEG EXIF fields. That means you can often recover the precise parameters of any AI image you saved — to reproduce it, remix it, or learn from it. This viewer reads those fields locally, so even private images stay on your device.
How it works
When you select a file, the browser reads its bytes with FileReader. For PNGs
the tool walks the chunk structure looking for tEXt and iTXt chunks — the
one keyed parameters holds the Stable Diffusion string. For JPEGs it scans the
EXIF block for UserComment and ImageDescription. The raw string is then
parsed into labeled fields: everything before “Negative prompt:” is the
prompt, and the trailing key/value list yields steps, sampler, CFG
scale, seed, and model. Nothing is uploaded — all parsing happens in
your browser.
Tips and limitations
- Use originals. Re-encoding an image (screenshots, social uploads, format conversion) usually strips the metadata chunk — keep the file your tool produced.
- Midjourney embeds little. Unlike SD, Midjourney does not write full parameters into the file, so expect sparse or empty results.
- Seed is the key to reproduction. With the seed plus the other parameters you can regenerate a near-identical image in the same tool.
- No metadata is normal. Many tools and exports simply do not embed parameters; an empty result does not mean the image is not AI-generated.