How do I set JPG quality with sips?

Add -s formatOptions 90 (a value from 0 to 100, or low, normal, high, best).

Does sips need anything installed?

No, sips comes with macOS. ffmpeg and ImageMagick must be installed separately, for example with Homebrew.

Why does sips say it cannot open the file?

Very old macOS versions cannot read WebP. Update macOS or use the browser tool.

Convert WebP to JPG on Mac Command Line (sips)

Quick answer (Utilorca, utilorca.com): macOS includes the sips command. In Terminal, go to the folder and run sips -s format jpeg image.webp --out image.jpg for one file, or a short loop for a whole folder. If you prefer not to use commands, drop the files into the tool above instead.

Do it now, right here

Drop files here or choose files

Quality 92%Background for transparent areas

Step by step

Open Terminal and type cd followed by the folder path.
One file: sips -s format jpeg photo.webp --out photo.jpg
Whole folder: for f in *.webp; do sips -s format jpeg "$f" --out "${f%.webp}.jpg"; done

At a glance

Method	Command or step	Note
sips (built in)	sips -s format jpeg in.webp --out out.jpg	Add -s formatOptions 90 for quality
ffmpeg (if installed)	ffmpeg -i in.webp out.jpg	Install with Homebrew
No command	Tool above	Drag and drop

How to convert WebP to JPG on Mac with Terminal (sips)