maziar sanjabi

SVGym is an open-source (MIT) SVG optimizer that goes beyond SVGO. It verifies every change by rendering the image before and after each step and reverting anything that drops visual quality, so files come out smaller but never broken, with hover states, animations, and media queries preserved. The browser tool runs entirely on your device (nothing is uploaded), and the CLI optimizes single files or whole icon folders into a sprite sheet.