Hi, how are you? Thanks so much for this. Made a bash script to run on my site’s image folder and it works well. Working on creating a cronjob for automation. Now I have a question. How can I do the same with GIFs, WEBP, and SVGs?

jpegoptim dir/**/*.jpg

I actually experienced the opposite, optipng does great, if you try to use ffmpeg the file gets 10x larger.

Take a file, for example, image7.png and do the following:

# optipng -o7 -zm1-9 -strip all image7.png -out image7-optipng.png
# ffmpeg -i image7.png image7-ffmpeg.png
# convert image7.png -define png:compression-level=9 image7-magik.png
# pngcrush image7.png image7-crush.png

Hi,

this usage of `find` in conjunction with `jpegoptim` (and possibly also with `optipng`) will call the `jpegoptim` command for every file `find` matches.

In case anyone is looking for processing all matching files in a single run, try the following:

`find path/to/images/ -regex ".*\.\(jpg\|jpeg\)" -exec jpegoptim {} +`

Note the `+` at the end of the `exec` command, which leads to `exec` finally being called with all matching files.

Source: https://www.booleanworld.com/guide-linux-find-command/ (right above “Executing commands on directories”)