GitHub - serge-rgb/TinyJPEG: Single header lib for JPEG encoding. Public domain. C99. stb style.

GitHub

tiny_jpeg.h

A header-only public domain implementation of Baseline JPEG compression.

Features:

stb-style header only library.

Does not do dynamic allocations

Simple API: 2 API calls.

3-value compression quality: 3 (best quality), 2 (Very good), 1 (Noticeable artifacts, best compression)

Public domain