Portable Network Graphics
png: 6 specs
- Media type
- image/png
- Extensions
- png
- Specification
- https://www.w3.org/TR/png-3/
- Judged by
- pillow, imagemagick, ffmpeg, pngcheck
Specs
| Spec | What it is | Version | Status | How it does |
|---|---|---|---|---|
| png/png | Valid PNGs of every colour type with all the standard chunks | 1.0 | accepts 96%, covers 23.0%, 22/s | |
| png/png-32x32 | 32x32 RGB PNG with lengths and CRCs written as constraints | 1.0 | accepts 100%, covers 11.0%, 0.85/s | |
| png/png-apng | Animated PNG (APNG) with the usual ancillary chunks | 1.0 | accepts 100%, covers 20.0%, 1.1/s | |
| png/png-boundary | Same as png, with values taken from the edges of what the format allows | 1.0 | accepts 91%, covers 22.4%, 71/s | |
| png/png-container | PNG chunk structure only; image data is arbitrary bytes, so most files do not decode | 1.0 | accepts 0%, covers 13.8%, 4.6/s | |
| png/png-extensions | 1x1 PNGs with the registered extension chunks, APNG included | 1.0 | accepts 100%, covers 26.6%, 16/s |