---
name: "etc1tool"
section: "1"
platform: "linux"
package: "etc1tool"
version: "34.0.5-12"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/etc1tool"
---

# etc1tool(1)

ETC1 conversion tool

## NAME

etc1tool - ETC1 conversion tool

## SYNOPSIS

**etc1tool** *infile* \[--help \| --encode \| --encodeNoHeader \| --decode\] \[--showDifference *difffile*\] \[-o *outfile*\]

## DESCRIPTION

**etc1tool** is a command line utility that lets you encode PNG images to the ETC1 compression standard and decode ETC1 compressed images back to PNG.

Default is **--encode**

## OPTIONS

- *infile*

  The input file to compress.

- \--help

  Print this usage information.

- \--encode

  Create an ETC1 file from a PNG file.

- \--encodeNoHeader

  Create a raw ETC1 data file (without a header) from a PNG file.

- \--decode

  Create a PNG file from an ETC1 file.

- \--showDifference *difffile*

  Write difference between original and encoded image to *difffile*. (Only valid when encoding).

- \-o *outfile*

  Specify the name of the output file. If *outfile* is not specified, the output file is constructed from the input filename with the appropriate suffix (**.pkm** or **.png**).

## SEE ALSO

https://developer.android.com/tools/help/etc1tool.html

## AUTHORS

The Android Open Source Project.