Shrink O'Matic is described as 'AIR application to easily (batch) resize (shrink) images. It handles JPGs, GIFs and PNGs' and is a Image Optimizer in the photos & graphics category. There are more than 50 alternatives to Shrink O'Matic for a variety of platforms, including Windows, Mac, Web-based, Linux and Android apps. The best Shrink O'Matic alternative is Image Toolbox, which is both free and Open Source. Other great apps like Shrink O'Matic are Caesium Image Compressor, XnConvert, ImageOptim and TinyFast.
Compress or convert images on the web with offline support. Images are not uploaded on server and processed on client with webassembly. Support for formats like JPEG, PNG, WebP, AVIF and JXL.
adionSoft Fast Image Resizer is a small tool to quickly resize a batch of pictures.
Edit one or several images in a few clics. Massive downscale, resize or crop a collection of images quickly.
jStrip is a free tool to reduce the file size of JPEG images without sacrificing image quality. High-traffic websites with many JPEG images can benefit from decreased bandwidth costs. Less hard disk space will be used by image collectors.
PhotoResize is a simple tool for very fast batch resizing of photos and pictures in JPEG format. Beyond simple options however, Picture Resizer also contains support for seam-carving (changing size while preserving content), image sharpening, metadata, and other options.
An image converter batch-processing multiple files. JPEG lossless transformations are implemented.
A powerful photo resizer and optimizer for Mac, allows you to optimize all your photos by 80% ~ 20% comparing to their originals while keeping their original resolution, quality.
Crunch - Insane(ly slow but wicked good) PNG image optimization. It combines selective bit depth, color type, and color palette reduction with zopfli DEFLATE compression algorithm encoding using embedded versions of the pngquant and zopflipng PNG optimization tools.
PictureBeaver is a WSH script for batch optimization PNG/JPEG/GIF images using optipng/jpegtran/gifsicle utilities.
If you want a lightweight image editor that you can use to perform basic editing tasks such as cropping, renaming, resizing and even applying watermarks to your pictures, then consider rEASYze. You can work with single or multiple images simultaneously.
SmallImage is a simple and efficient tool to batch process JPEG files, resize them, recompress them, remove embedded profiles and make them ready for the web or store them efficiently.
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