How To Install pngcrush on Fedora 34

pngcrush is Optimizer for PNG (Portable Network Graphics) files

Introduction

In this tutorial we learn how to install pngcrush on Fedora 34.

What is `pngcrush`

pngcrush is a commandline optimizer for PNG (Portable Network Graphics) files. Its main purpose is to reduce the size of the PNG IDAT datastream by trying various compression levels and PNG filter methods. It also can be used to remove unwanted ancillary chunks, or to add certain chunks including gAMA, tRNS, iCCP, and textual chunks.

We can use yum or dnf to install pngcrush on Fedora 34. In this tutorial we discuss both methods but you only need to choose one of method to install pngcrush.

Install pngcrush on Fedora 34 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

The output should look something like this:

Fedora 34 - x86_64                               20 kB/s | 6.6 kB     00:00
Fedora 34 openh264 (From Cisco) - x86_64        1.4 kB/s | 989  B     00:00
Fedora Modular 34 - x86_64                       68 kB/s | 6.5 kB     00:00
Fedora 34 - x86_64 - Updates                    3.5 kB/s | 6.2 kB     00:01
Fedora Modular 34 - x86_64 - Updates             17 kB/s | 5.9 kB     00:00
Metadata cache created.

After updating yum database, We can install pngcrush using dnf by running the following command:

sudo dnf -y install pngcrush

Install pngcrush on Fedora 34 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

The output should look something like this:

Fedora 34 - x86_64                               20 kB/s | 6.6 kB     00:00
Fedora 34 openh264 (From Cisco) - x86_64        1.4 kB/s | 989  B     00:00
Fedora Modular 34 - x86_64                       68 kB/s | 6.5 kB     00:00
Fedora 34 - x86_64 - Updates                    3.5 kB/s | 6.2 kB     00:01
Fedora Modular 34 - x86_64 - Updates             17 kB/s | 5.9 kB     00:00
Metadata cache created.

After updating yum database, We can install pngcrush using yum by running the following command:

sudo yum -y install pngcrush

How To Uninstall pngcrush on Fedora 34

To uninstall only the pngcrush package we can use the following command:

sudo dnf remove pngcrush

pngcrush Package Contents on Fedora 34

/usr/bin/pngcrush
/usr/lib/.build-id
/usr/lib/.build-id/4a
/usr/lib/.build-id/4a/baa34466af1ca927d4f1efea9c9a6a0182b1f3
/usr/share/doc/pngcrush
/usr/share/doc/pngcrush/ChangeLog.html
/usr/share/licenses/pngcrush
/usr/share/licenses/pngcrush/LICENSE
/usr/share/man/man1/pngcrush.1.gz

References

pngcrush website

Summary

In this tutorial we learn how to install pngcrush on Fedora 34 using yum and dnf.