Guetzli is great. Here's a better comparison (same filesize) done by one of the authors [1]. I'm working on a more practical tool [2] which produces comparable

Guetzli is great. Here's a better comparison (same filesize) done by one of the authors [1]. I'm working on a more practical tool [2] which produces comparable results [3]. [1] https://drive.google.com/drive/u/1/folders/0B0w_eoSgaBLXQk1VQU9nTGh3NGs https://drive.google.com/drive/u/1/folders/0B0w_eoSgaBLXQk1V.... [2] http://getoptimage.com http://getoptimage.com [3] http://i.imgur.com/qmIwJGw.jpg http://i.imgur.com/qmIwJGw.jpg