jpegoptim - utility to optimize/compress JPEG files
A super simple Mac GUI for Google's JPEG encoder, guetzli
LibJpeg.Net allows you to read and create JPEG images in .NET compatible languages. It's the managed version of original libjpeg library developed by Tom Lane and the Independent JPEG Group (IJG).
Demo from Chrome Dev Summit of using Web Assembly to optimize images in a browser
A Python program that compresses raw images based on the JPEG compression algorithm.
Python bindings for Google's Guetzli, a JPEG encoder that optimises JPEG compression
Convert (and compress) lots of image formats into JPEG, PNG and WebP formats.
Guetzling is a simple script for macOS and Linux written in Bash, to automate (recursively finding files) the compression of jpegs using the Guetzli algorithm.
Optimize any image by chroma subsampling and optimized huffman coding in Python. Basically, using JPEG algorithm!
Resource compiler, packages images, fonts, cursors, etc as compilable C source. Portable ANSI C.
Batch Guetzli compressions in a manageable fashion