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.
Secure Image Tools is a free, privacy-first suite of image tools in 34 languages. Instantly compress, convert, resize, and edit images — no sign-up, no watermarks, and your files are never stored. Fast, secure, and easy to use on any device.
United States
ImageMagicTool is a simple, browser-based utility designed to help users quickly resize, compress, or convert images without the need for software installations or logins.
Pakistan
Compress and convert files instantly without uploading them to any server. Powered by WebAssembly, Featherfile processes everything 100% locally in your browser. Fast, secure, and privacy-first.
Smolr is a small tool that let you convert and optimize your image files to make them smaller and more usable.
Fast dark-themed Mac media browser for photos and videos supporting batch editing, cropping, bulk renaming, color filters, metadata removal, instant thumbnails, folder and subfolder management, built-in search, and complete file management without cloud or account.
United States
Compress JPG, JPEG, PNG, WebP, GIF, AVIF, JXL, and QOI formats online for free. No sign-up needed. Secure in-browser compression handles up to 1000 files simultaneously. Your files never leave your device, ensuring complete privacy.
All-in-One Image Converter is a free online tool designed to help users convert images between various formats in seconds. Whether you need to convert PNG to JPG, JPG to WebP, or GIF to BMP, this tool provides a simple, fast, and secure solution without requiring installation or...
Pakistan
Free browser-based tools for PDF, image & data processing. 100% client-side - your files never leave your device. No limits, no watermarks.
SocialPixOptimizer is a powerful, free image optimization tool built specifically for social media creators and digital marketers. With over 50,000 monthly users and 2 million+ images optimized, it's become an essential tool for anyone managing social media content.
Local image compression for Mac: batch-compress PNG, JPEG, WebP & AVIF and upload straight to R2/S3/OSS/COS. One-time $9, no subscription, everything stays on your Mac.
China
25 offline desktop tools for image compression, PDF processing, and file conversion. Fast Rust-native performance. Your files never leave your device. One-time purchase, no subscription.
