apngopt command not found

Introduction

When you run more command in linux terminal / console, you get the following error message

apngopt: command not found

or when using sudo you get the following error message

sudo: apngopt: command not found

Solutions to apngopt: command not found

How To Fix apngopt: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu apngopt is provided by apngopt package.

apngopt is:

Optimize APNG files by reducing their file size.

The Animated Portable Network Graphics (APNG) file format is an extension to the Portable Network Graphics (PNG) specification. It allows for animated PNG files that work similarly to animated GIF files, while retaining backward compatibility with non-animated PNG files and adding support for 8-bit transparency and 24-bit images.

To fix this problem, we can install more using the command below.

sudo apt-get -y install apngopt

This command might take some time to finish depending on your machine internet connection.

You can also use apt command to install apngopt.

sudo apt -y install apngopt

Or if you have aptitude installed you can use the following command.

sudo aptitude install apngopt

Summary

In this tutorial we learn how to fix apngopt command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.