A free edge API by formatho.com, privacy-first developer tools.
Free, no signup, runs entirely in your browser — your data never leaves your device.
curl "https://base64-formatho.filesformatho.workers.dev/api?text=hello&action=encode"
curl "https://base64-formatho.filesformatho.workers.dev/api?text=aGVsbG8%3D&action=decode"
Full parameter reference and live response: /api endpoint.
Prefer a UI? Use the complete client-side version — your data never even leaves your browser: Base64 Encoder/Decoder Online on formatho.com.
Browse every free Formatho Worker tool on the Formatho Tools index.