About this tool
Generate cryptographically random tokens in your browser using crypto.getRandomValues, in your choice of format and length.
Frequently asked questions
Are these tokens secure?
Yes — they use the browser's cryptographically secure random number generator, and nothing leaves your device.
What do the formats mean?
Hex uses 0-9a-f, base62 uses letters and digits, and base64url uses URL-safe Base64 without padding.