How to install jpegoptim and optipng in Linux

jpegoptim and optipng in Linux

In this article we will discuss about how to install the jpegoptim which is a utility tool to optimize/compress JPEG files without loosing its original quality and OptiPNG is a small program which helps to optimize PNG images to smaller size without losing information.

To Install jpegoptim

On Debian and its Derivatives

apt-get install jpegoptim
or
sudo apt-get install jpegoptim

On RedHat based Systems
You need to install and enable EPEL repository On RPM based systems like RHEL, CentOS, Fedora etc.,

yum install epel-release

On Fedora 22+ versions

dnf install epel-release

Next install jpegoptim program from the repository
yum install jpegoptim

On Fedora 22+ versions
dnf install jpegoptim

Installation

[root@linuxhelp ~]# yum install jpegoptim
Loaded plugins: fastestmirror, refresh-packagekit, security
Setting up Install Process
&hellip 
&hellip 
&hellip 
===========================================================================
 Package            Arch            Version               Repository     Size
===========================================================================
Installing:
 jpegoptim          x86_64          1.4.3-1.el6           epel           27 k

Transaction Summary
===========================================================================
Install       1 Package(s)

Total download size: 27 k
Installed size: 53 k
Is this ok [y/N]: y
...
...
...
...
Installed:
  jpegoptim.x86_64 0:1.4.3-1.el6                                              
Complete

Now the Installation is completed.

Syntax of jpegoptim

jpegoptim [options] filename.jpeg

Now Let’ s Compress the language.jpg image using jpegoptim command and before that we can find out the actual size of the image using du command.

Example

[root@linuxhelp Desktop]# du -sh language.jpg
12K    language.jpg 
[root@linuxhelp Desktop]# jpegoptim language.jpg
language.jpg 18x21 24bit N Exif IPTC XMP Adobe JFIF [ok] 8490 -->  8068 bytes (4.9%),  optimized
[root@linuxhelp Desktop]# du -sh language.jpg
8.0k   language.jpg

You can compress the given image to a specific size to, but it won’ t damage the actual picture density.

[root@linuxhelp Desktop]# du -sh image.jpg 
684k   image.jpg
[root@linuxhelp Desktop]# jpegoptim --size=200k image.jpg
image.jpg 2082x2975 24bit N Adobe JFIF [ok] 69661 -->  205079 bytes (70.56%),  optimized
[root@linuxhelp Desktop]# du -sh image.jpg
204k   image.jpg

jpegoptim is also Possible to compress multiple png images.

To install Opti PNG

To install Opti PNG on your Linux systems, run the following command from your terminal.

On Debian and it' s Derivatives

apt-get install optipng
or
sudo apt-get install optipng

On RedHat based Systems
# yum install optipng

On Fedora 22+ versions
# dnf install optipng

You must have epel repository enabled on your RHEL/CentOS based systems to install opti png program.

Installation

[root@linuxhelp Desktop]# yum install optipng
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
 * base: centos.excellmedia.net
 * epel: mirror.wanxp.id
 * extras: centos.excellmedia.net
 * updates: centos.excellmedia.net
Setting up Install Process
Resolving Dependencies
There are unfinished transactions remaining. You might consider running yum-complete-transaction first to finish them.
-->  Running transaction check
--->  Package opti png.x86_64 0:0.6.4-1.el6 will be installed
-->  Finished Dependency Resolution
...
...
...
...
Installed:
  opti png.x86_64 0:0.6.4-1.el6                                                                      

Complete!

OptiPNG Image Optimizer

Syntax

optipng filename.png
optipng [options] filename.png

Now Let’ s Compress the image1.png image using optipng command and before that we can find out the actual size of the image using du command.

Example

[user1@linuxhelp Desktop]$ du -sh image1.png
280k   image1.png

[user1@linuxhelp Desktop]$ optipng image1.png
Opti PNG 0.6.4: Advanced PNG optimizer.
Copyright (C) 2001-2010 Cosmin Truta.

** Processing: image1.png
519x600 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 284820 bytes
Input file size = 284973 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0        IDAT size = 284202
  zc = 9  zm = 8  zs = 0  f = 5        IDAT size = 183140
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 5        IDAT size = 183140

Output IDAT size = 183140 bytes (101680 bytes decrease)
Output file size = 183197 bytes (101776 bytes = 35.71% decrease)

[user1@linuxhelp Desktop]$ du -sh image1.png
180k   image1.png

optipng is also Possible to compress multiple png images.