Guetzli is a Google program to optimize JPEG images. Unfortunately, it only works one file at a time. With this script in Python you can do it recursively a whole folder. ## Image optimized with **guetzli-recursively** ![after and before](demo.jpg) unsplash-logoSenjuti Kundu **UPDATE** [GUI for Mac OS](https://github.com/tanrax/guetzli-recursively-gui) # Install Guetzli must be installed on your system. Follow the official instructions. [Guetzli](https://github.com/google/guetzli) and 2.7.10 or Python 3. After ```bash pip3 install guetzli-recursively ``` # Use ```bash guetzli_recursively [folder] ``` ## Example ```bash guetzli_recursively img/ ``` out ```bash img/tasks.jpg Save 6% img/portfolio/idecrea/space.jpg It is not necessary to optimize img/portfolio/home.jpg Save 3% ``` # Quality Must be greater than or equal to 84. ```bash guetzli_recursively --quality 85 img/ ```