One way to make your web pages load faster is to use lossless compression.

On Linux there’s a tool called “jpegoptim” to losslessly optimize JPEG files. You can install using apt-get or yum.

Here’s how to optimize all jpg files in a directory:

find /jpg_directory/ -maxdepth 1 -type f -name "*.jpg" -exec jpegoptim --strip-all {} \;

You can remove -maxdepth 1 if you want to process the JPEGs in the subfolders recursively.

Similarly, the tool to optimize PNG files is “optipng”.