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Compress screenshots from the Finder on macOS without TinyPNG

For the past few years, I have been using an Automator script that would compress PNGs using tinypng-cli that I could call from the Finder.

I recently learned how TinyPNG compresses PNGs: it calls out to pngquant, which is an open-source program that you can download yourself. Not using TinyPNG means I no longer need to send my images to a third-party, and I no longer need a network connection to compress images.

To do that, you will first have to install pngquant:

brew install pngquant

Then, get the shortcut: https://www.icloud.com/shortcuts/a63b010001c547b196f89eaa6262e9ef

It looks like this:

Capture d’écran 2025-03-03 à 12.52.52-fs8

Finally, go to your Finder, and click the three dots ("More"):

Screenshot 2025-02-10 at 19.38.59-fs8

Turn on pngquant as a Quick Action:

Screenshot 2025-02-10 at 19.37.51-fs8

You can now compress PNGs straight from the Finder:

Screenshot 2025-02-10 at 19.34.27-fs8

Same with JPEG images

Link: https://www.icloud.com/shortcuts/c7841557461c4d66a4631afd0ca7f6a9

brew install jpegoptim

Capture d’écran 2025-03-03 à 12.51.57-fs8