Apps similar to Caesium Image Compressor include Image Toolbox, which is free and open source. Other options are ImageOptim, Dinky, OptiImage and FileOptimizer. You're spoiled for choice with Image Optimizers like Caesium Image Compressor: we list more than 100 alternatives for Windows, the web, Mac, Linux and Android.
ImageRobo is your all-in-one tool to compress and resize images quickly, for free, and with full privacy. No uploads, no signup. Supports JPG, JPEG, PNG & WebP. Optimize images for web, email, or social media — more powerful tools coming soon!
India
ShrinkFox by Chovexa is a privacy-first, client-side web utility engineered to compress JPG, PNG, WebP, and PDF documents down to exact target file sizes (such as <50KB, <100KB, or custom thresholds) with zero server uploads.
ImgCompress is a self-hosted image toolbox for compression, format conversion, cropping, and local AI background removal. It supports 70+ formats, including PSD and HEIC, with a web UI and no external uploads.
Compress images, videos, documents, and 50+ file types fast, securely, and without losing quality. Enjoy free cloud storage for all your compressed files, seamless batch processing, and a simple, intuitive interface. Perfect for creators, teams, and anyone who wants to save space and time.
jPDFOptimizer is a Java PDF library SDK used to optimize and reduce the size of PDF documents.
United States
