jpegoptim for image optimization

Introduction

Last time looked at the jpegtran command for optimizing images. Today, We will talk about jpegoptim. jpegoptim is a utility for optimizing JPEG files. It provides lossless optimization (based on optimizing the Huffman tables) and “lossy” optimization based on setting a maximum quality factor.

Installation of jpegoptim

For Debian users:

# apt-get install jpegoptim

Usage of jpegoptim

1. To perform optimization, just run the command:

# jpegoptim file.jpg

2. It is better to use an additional parameter to cut out all metadata that is not needed on the site:

# jpegoptim file.jpg --strip-all

3. To optimize all JPG images in a folder at once:

# jpegoptim * .jpg --strip-all