About base64.cool
Free, fast, and private developer tools — right in your browser.
base64.cool is a free suite of developer tools that runs entirely in your browser. No data is ever sent to a server — all encoding, decoding, hashing, and formatting happens client-side using JavaScript and Web Crypto APIs.
Features
- 100% client-side processing — your data never leaves your browser
- No registration, no tracking cookies, no data collection
- Works offline after first load
- Open-source tools built with Next.js and TypeScript
- Optimized for speed and accessibility
Available Tools
Built by developers, for developers.