SmallBytes is a free, privacy-focused image compression tool that works entirely in your browser. No sign-ups, no uploads, no limits.

Our Mission

We believe image optimization should be simple, free, and private. That's why we built SmallBytes - a tool that compresses your images locally in your browser without ever uploading them to a server.

How It Works

SmallBytes uses WebAssembly (WASM) technology to run professional-grade compression algorithms directly in your browser. This includes:

MozJPEG - Mozilla's optimized JPEG encoder
OxiPNG - A high-performance PNG optimizer
libwebp - Google's WebP encoder

These are the same tools used by professional image optimization services, but running entirely on your device.

Privacy First

Your images never leave your device. All processing happens locally in your browser, which means:

No data is uploaded to any server
No images are stored or viewed by anyone
The tool works offline once the page loads
No account or personal information required

100% Free

SmallBytes is completely free to use with no limits on the number of images you can compress. There are no hidden fees, premium tiers, or watermarks. The service is supported by non-intrusive advertising.

Technical Details

SmallBytes is built with modern web technologies:

Astro - For fast, SEO-friendly static pages
React - For the interactive compression interface
jSquash - WebAssembly image codecs
Cloudflare Pages - For global, fast hosting

Contact

Have questions or feedback? We'd love to hear from you. Reach out through our contact form or find us on social media.