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Generate cryptographically secure random numbers within any custom range. Features dice rolls, lottery presets, duplicate controls, and statistical summaries.
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Generate cryptographically secure random numbers using the browser's native Web Crypto API. Eliminates algorithmic modulo bias for fair lotteries, games, and sampling.
Yes. We use window.crypto.getRandomValues with rejection sampling, which avoids modulo bias and provides cryptographically secure randomness.
Yes, uncheck 'Allow duplicates' to ensure every generated number in the batch is unique.
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