How Random Number Generator works
The Random Number Generator produces one or thousands of random integers within any range you define, from a single lottery number to a list of unique IDs. Each number is drawn from the Web Crypto API (crypto.getRandomValues), backed by your operating system cryptographically secure entropy source, far stronger than the predictable Math.random().
It also offers a no-duplicates mode (unique values via rejection sampling, ideal for raffles or sampling), ascending/descending sorting, and bulk generation with one-click copy. The generation logic is separated from browser APIs, making it auditable and deterministic under test.