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