OptiPNG is described as 'Command-line PNG optimizer that recompresses image files to a smaller size, without losing any information. This program also converts external formats (BMP, GIF, PNM and TIFF) to optimized PNG, and performs PNG integrity checks and corrections' and is a Image Optimizer in the os & utilities category. There are more than 50 alternatives to OptiPNG for a variety of platforms, including Windows, Mac, Linux, Web-based and SaaS apps. The best OptiPNG alternative is Dinky, which is both free and Open Source. Other great apps like OptiPNG are GetCompress, ImageOptim, TinyFast and OptiImage.
Minime is a free and open-source desktop image compressor and format converter for Windows, macOS, and Linux. Built in Rust, it focuses on lossless image optimization while keeping everything private and local to your device.
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Pi7 Image Tool is a collection of some online tools like Image Compressor, Image resize tool, and Image conversion tools (Image to JPG, Image to PNG, etc).
