Optimus.io is described as 'optimus.io offers lossless compression of images available with a WordPress plugin and via API' and is an app in the Photos & Graphics category. There are more than 25 alternatives to Optimus.io for a variety of platforms, including Windows, Mac, Online / Web-based, Linux and Wordpress. The best alternative is RIOT - Radical Image Optimization Tool, which is free. Other great apps like Optimus.io are ImageOptim (Free Personal, Open Source), TinyPNG (Freemium), pngquant (Free, Open Source) and PNGGauntlet (Free).
Saving images for web/email/other media with the best compression ratio and quality is a difficult task if you don’t have the right tools. Choosing the right format then choosing the right parameters are the key factors of smaller files.
ImageOptim is excellent for publishing images on the web (easily shrinks images “Saved for Web” in Photoshop). It's useful for making Mac and iPhone/iPad applications smaller (if you configure Xcode to allow better optimization).
Experimental, fast Web PNG/JPG optimizer which offer lossless, visually lossless or lossy compression. it performs image reductions over iterations thanks to recursive multi-processing and multithreading systems.
OptiPNG is a 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.
Leanify is a lightweight lossless file minifier/optimizer. It removes unnecessary data (debug information, comments, metadata, etc.) and recompress the file to reduce file size. It will not reduce image quality at all. Features