How Do I Make a Screenshot a JPG on Mac?

By default, all screenshots on the Mac are saved in PNG format.

PNG files crisp and clear but are too huge for websites and blogs.

There is a way to convert them to JPG formats with smaller file size.

Just open the image, then export it as JPG.

Is there a faster way?

Can we just do a screenshot straight into JPG?


Here’s how…

  1. Open Terminal
  2. Type in – defaults write type jpg; killall SystemUIServer
  3. Press Return

Now all screenshots are in lightweight JPG formats.

By the way, my favourite screenshot keyboard shortcut is Shift-Command-4.

If you enjoy this post, please like and subscribe to more.

Feel free to share your thoughts and questions.

Thanks to TechWall for teaching me the trick!

Adrian Lee

The Guide to macOS Sierra / High Sierra

About the Author


I am Adrian Lee from Sunny Singapore. My passions are in digital electronics, quantum physics, and exploring lifestyles. In this personal blog, I journal my thoughts and lessons. Enjoy!

Leave a Comment or Ask a Question