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

# pngcp(1)

create a new PNG file, having changed some attributes

## NAME

pngcp - create a new PNG file, having changed some attributes

## SYNOPSIS

```
 pngcp [-d <depth>] [-s <samples per pixel>] <input filename> <output filename>
```

## DESCRIPTION

The **pngcp** create a new PNG file using the image data from the input file. The output file will have the bitdepth and number of samples per pixel as specified on the command line. There are limits on what is a valid combination imposed by the PNG specification -- **pngcp** will inform you of invalid combinations.

Samples with more than eight bits are not correctly handled at the moment.

## RETURNS

Nothing

## EXAMPLE

```
pngcp toucan.png new.png
```

## SEE ALSO

[tiffcp(1)](/tiffcp/1.md) [pngchunkdesc(1)](/pngchunkdesc/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.