Date: 2018feb26 Update: 2024dec31 OS: Windows Keywords: jpeg Q. Windows: How can I further compress jpg files A. Download Guetzli (for Windows) and ImageMagick (for Windows) and use like this:

magick myimage.jpg myimage.png guetzli_windows_x86-64 myimage.png myimage_small.jpg

Guetzli only works on PNG files so you need to convert your JPEG to a PNG first. When it runs, it takes minutes and uses lots of memory. But it usually can make your JPG 30% smaller (which is rather amazing) https://github.com/google/guetzli/releases