peterc/pure_jpeg: Pure Ruby JPEG encoder and decoder with no native dependencies
13-Mar-2026 272
Convert PNG or other pixel data to JPEG. Or the other way! Implements baseline JPEG encoding (DCT, Huffman, 4:2:0 chroma subsampling) and decodes both baseline and progressive JPEGs. Exposes a variety of encoding options to adjust parts of the JPEG pipeline not normally available (I needed this to recreate the JPEG compression styles of older digital cameras - don't ask..)
It works on CRuby 3.0+, TruffleRuby 33.0, and JRuby 10.0.
peterc/pure_jpeg: Pure Ruby JPEG encoder and decoder with no native dependencies #ruby #rubydeveloper #rubyonrails #peterc/pure_jpeg: #encoder #decoder #native #dependencies https://rubyonrails.ba/link/peterc-pure_jpeg-pure-ruby-jpeg-encoder-and-decoder-with-no-native-dependencies
