Developer Tools
Free utilities — all run locally in your browser.
Base64 Encode / Decode
UTF-8 safe text ↔ Base64
URL Encode / Decode
Percent-encode for safe URLs
SHA Hash Generator
SHA-1, SHA-256, SHA-384, SHA-512
JWT Decoder
Decode header + payload (paste-only)
QR Code Generator
Encode any text/URL into a QR
UUID v4 Generator
Random IDs via crypto.randomUUID
Lorem Ipsum
Placeholder text for mockups