Google Guetzli is an open source JPEG encoder that creates 35% smaller files

20x24 pixel zoomed areas from a picture of a cat's eye. Uncompressed original on the left. Guetzli (on the right) shows less ringing artefacts than libjpeg (middle) without requiring a larger file size. Image and caption via Google Google has announced the open source release ofGuetzli, anew JPEG encoder able to reduce a JPEG's file size by up to 35%,without any significant loss of quality. Per a study detailing the algorithm, Guetzli 'aims to produce visually indistinguishable images at a lower...