Developer tools

In-browser utilities for everyday development — encoders, decoders, and generators.

• Base64 Encode / Decode Encode and decode Base64 right in your browser — text in, Base64 out, and back. Nothing you type ever leaves your device.
• JWT Decoder Decode a JSON Web Token in your browser — see its header, payload, and signature, with exp/iat/nbf humanized. Nothing you paste ever leaves your device.
• JWT Secret Generator Generate a cryptographically strong HS256 secret and sign a JWT with it, entirely in your browser. The secret, payload, and token never leave your device.
• QR Code Generator Turn any text or URL into a QR code right in your browser and download it as a PNG or SVG. Generation is fully client-side — nothing is uploaded.
• SSH Key Generator Generate an SSH keypair (Ed25519 or RSA) right in your browser, with the public key in authorized_keys format and the private key in OpenSSH format. Everything happens client-side — the private key never leaves your device.