Random Number Generator
Generate one or more random integers with Web Crypto, with or without repeats.
Local randomness with Web Crypto
Integers come from crypto.getRandomValues with rejection sampling to avoid modulo bias. No external service is contacted.
Lists with or without repeats
Disable repeats for sampling without replacement. The count cannot exceed the available range.
Frequently asked questions
Is this suitable for cryptography?
It uses the browser's cryptographic source, but this general interface does not replace specialized protocols or security review.