TinyPNG This is a save filetype plugin that will use the TinyPNG service to compress images. Requested here. TinyPNG uses lossy compression, while maintaining transparency and most visual quality.   A few things to keep in mind: -An active internet connect is required -This will send your image to a third party service (TinyPNG), and download a compressed version generated by said third party. You'll need to read their Terms of Service; especially the privacy section.