This is a client of TinyPNG for Mac, with which you can compress pngs without open browser and manually download images, all you need to do is just drag and ...
TinyGUI is a beautiful desktop application, allowing you to (batch) resize images and use your API key to up and download images from the TinyPNG servers. Free.
Free online image compressor for faster websites! Reduce the file size of your WEBP, JPEG, and PNG images with TinyPNG's smart lossy compression engine.