jpegoptim

Optimise JPEG images. More information: https://github.com/tjko/jpegoptim.

• Optimise a set of JPEG images, retaining all associated data:

jpegoptim image1.jpeg image2.jpeg imageN.jpeg

• Optimise JPEG images, stripping all non-essential data:

jpegoptim --strip-all image1.jpeg image2.jpeg imageN.jpeg

• Force the output images to be progressive:

jpegoptim --all-progressive image1.jpeg image2.jpeg imageN.jpeg

• Force the output images to have a fixed maximum filesize:

jpegoptim --size=250k image1.jpeg image2.jpeg imageN.jpeg