Generate secure random strings, tokens and API keys.
The random string generator creates cryptographically secure strings with the browser's crypto.getRandomValues: choose the length, how many, and the characters – letters, numbers, symbols, hexadecimal, URL-safe Base64 or digits only – and add a prefix such as sk_live_.
Use them as API keys, secrets, tokens, coupon codes or test data. The entropy shown tells you how hard a string is to guess.
Uses the Web Crypto random generator, without modulo bias.
Custom sets, hex, Base64 URL-safe or numeric.
Up to 500 strings at once.
The strength of the strings in bits.
At least 128 bits of entropy, e.g. 32 hex characters or 22 Base64 characters.
It uses the operating system's cryptographic random source through the browser.
No, they're created on your device and never sent anywhere.