sudo coffee
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Base64 Encoder/Decoder
A fast, client-side Base64 tool that supports UTF-8 characters. No data is sent to any server.
Local-First Verification
This Base64 Converter operates strictly on
your hardware. We use the
window.crypto API
and local JavaScript execution.
- ✔ No data sent to server (Check DevTools Network tab)
- ✔ Zero-Log policy (We don't even have a database)
- ✔ Works 100% offline
About Base64
Base64 is a group of binary-to-text encoding schemes that represent binary data in an ASCII string format by translating it into a radix-64 representation. This tool runs entirely in your browser using JavaScript.