How to Add Libpng12 PPA for Ubuntu-Based Systems

GNU/Linux Ubuntu Adding libpng12 PPA Repo Guide

Hi! The Tutorial shows you Step-by-Step How to Add libpng12 PPA Repository in Ubuntu 18.04+ GNU/Linux Based OSes.

And libpng for Ubuntu is the official PNG reference Library. It supports almost all PNG Features, is extensible, and has been extensively tested for over 23 years.

Finally, this Setup is Valid for All the Ubuntu-based Distros like:

• Linux Mint
• Lubuntu
• Kubuntu
• Xubuntu
• Zorin OS
• Pop_OS!
• Elementary OS
• Kde Neon
• Linux Lite
• Bodhi Linux
• Q4OS
• Trisquel
• LXLE
• feren OS
• Peppermint
• Voyager Ubuntu
• Linux Ultimate Edition

1. 1. Launching Terminal

   How to QuickStart with Command Line on GNU/Linux:

   Console Linux QuickStart Guide

   Getting-Started with Command Line on GNU/Linux Terminal

2. 2. Adding libpng12 Repo

   Then to Add libpng12 Repository for Ubuntu
   Execute:

   sudo add-apt-repository ppa:linuxuprising/libpng12

   Authenticate with the User Admin Pass.
   If Got “User is Not in Sudoers file” then see: How to Enable sudo.
   And then for most Ubuntu-based OSes to Refresh Repos:

   sudo apt update

   But in case of “Not found” Issue on Ubuntu 22.04+, to amend it manually using the nano Editor:

   sudo nano /etc/apt/sources.list.d/*libpng12*.list

   And for instance change “jammy” in “impish“.
   Finally, Ctrl+x to Save & Exit from nano Editor.
   Last, refresh the Apt Sources again!

3. 3. libpng12 Getting Started

   Finally, to libpng12 Quick Start for Ubuntu Based:

   libpng12 Ubuntu Get Started Guide

   libpng12 Getting Started Tutorial on Ubuntu