---
name: "pngchunkdesc"
section: "1"
platform: "linux"
package: "pngtools"
version: "0.5~git20230507.177e87f-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/pngchunkdesc"
---

# pngchunkdesc(1)

decode information embedded into a PNG chunk name

## NAME

pngchunkdesc - decode information embedded into a PNG chunk name

## SYNOPSIS

```
 pngchunkdesc
```

## DESCRIPTION

PNGfiles are based around a series of chunks, which embody the information stored in the image file. These chunks have four character ASCII names, where the case of each letter stores additional information.

This program decodes the case information in the chunk names, and displays it. The program reads chunk names from stdin, and write chunk descriptions to stdout.

## SEE ALSO

[tiffinfo(1)](/tiffinfo/1.md) [pnginfo(1)](/pnginfo/1.md)

## VERSION

This documentation was generated for **pngtools** 0.2 by **autodocbook** (http://www.stillhq.com).

## AUTHOR

**pngtools** is under development by Michael Still (mikal@stillhq.com). All code is Copyright Michael Still 2001 to 2003,  and is released under the GNU GPL. Code submissions are welcomed. Contact Michael at the address above if you have something you would like to contribute.

## BUGS

There  are no known bugs in **pngtools**. If you find one, please contact mikal@stillhq.com and let me know.