Install guetzli by entering the following commands in the terminal:
sudo apt update sudo apt install guetzli
Description:
perceptual JPEG encoder
Guetzli is a JPEG encoder that aims for excellent compression density at high visual quality. Guetzli-generated images are typically 20-30% smaller than images of equivalent quality generated by libjpeg. Guetzli generates only sequential (nonprogressive) JPEGs due to faster decompression speeds they offer.
Homepage: https://github.com/google/guetzli
Version: 1.0.1-1
Section: universe/graphics