Crunch PNG vs Piio: What are the differences?
Crunch PNG: Insane PNG image optimization. Crunch is a tool for lossy PNG image file optimization. It combines selective bit depth, color type, and color palette reduction with zopfli DEFLATE compression algorithm encoding using the pngquant and zopflipng PNG optimization tools; Piio: Generates responsive images so you don't have to optimize. Piio automatically generates real-time responsive images for your website visitors and delivers them at maximum speed. (lazy loading feature included).
Crunch PNG and Piio can be primarily classified as "Image Processing and Management" tools.
Crunch PNG is an open source tool with 2.73K GitHub stars and 94 GitHub forks. Here's a link to Crunch PNG's open source repository on GitHub.