Generate cryptographically random secrets for API keys, JWT secrets, encryption keys, and more.
Your secrets are generated entirely in your browser using the Web Crypto API. Nothing is stored, logged, or sent to a server.
App Icon Bundle
Generate a complete Xcode asset catalogue and Expo Android icons from one image.
PEM / Certificate Decoder
Inspect local X.509 certificates, validity, usages, SANs, and fingerprints.
Chmod Calculator
Toggle permissions or enter a number to see the chmod breakdown.
Chrome Extension Icons
Upload a PNG and get every icon size a Chrome extension needs.