Portable Network Graphics 1.2
Partly documentedimage · also known as PNG (1.2)
Portable Network Graphics (PNG) was designed for the lossless, portable, compressed storage of raster images. PNG provides a patent-free replacement for GIF and can also replace many common uses of TIFF. Indexed-color, grayscale, and truecolor images are supported, plus an optional alpha channel. Sample depths range from 1 to 16 bits. PNG is designed to work in online viewing applications, so it is fully streamable. It can store gamma and chromaticity. PNG also detects file corruption.
Identify it
| Extensions | .png |
|---|---|
| MIME types | image/png |
| Signatures | 89504e470d0a1a0a0000000d49484452 at byte 0 (PNG 1.2) |
| PRONOM | fmt/13 |
| Wikidata | Q27229642 |
| Apple UTI | public.png |
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Open it
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Convert it
| To | With | Fidelity | Command and losses |
|---|---|---|---|
| Tagged Image File Format | ImageMagick | Lossless | convert in.png out.tifPixels kept; some metadata, colour profiles or layers may be dropped. |
| GIF 89a | ImageMagick | Lossy | convert in.png out.gifReduced to 256 colours. |
| JPEG File Interchange Format 1.02 | ImageMagick | Lossy | convert in.png out.jpgLossy compression. |
| WebP | ImageMagick | Lossy | convert in.png out.webpLossy compression. |
Documentation
Sources
From Kaitai Struct format gallery, PRONOM, Wikidata. Updated 2026-10-24.