Perceptual JPEG encoder

Improved JPEG encoder.

jpegoptim - utility to optimize/compress JPEG files

Research JPEG encoder

JPEG encoder/decoder written in Python

A JPEG encoder in a single C++ file

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).

Guetzli perceptual JPEG encoder for Go (Zero Dependencies).

Demo from Chrome Dev Summit of using Web Assembly to optimize images in a browser

Python bindings for Google's Guetzli, a JPEG encoder that optimises JPEG compression

A Python program that compresses raw images based on the JPEG compression algorithm.

Guetzli for NodeJS/Browser

JPEG encoder written in Rust

MozJPEG wrapper for .Net

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!

Batch Guetzli compressions in a manageable fashion

Resource compiler, packages images, fonts, cursors, etc as compilable C source. Portable ANSI C.

JPEG decoder & encoder