uencoder

Random Bytes Generator

Generate cryptographically secure random bytes or integers. Free, private, and 100% client-side.

Local only

Recent history

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How to use

  1. Select mode: bytes or integer.
  2. For bytes: set length and output format.
  3. For integer: set min and max range.
  4. Copy the generated value.

Frequently asked questions

Are these numbers cryptographically secure?
Yes. They use the Web Crypto API's getRandomValues, which provides cryptographically secure randomness.
What formats are available?
Hex, Base64, or raw bytes for random bytes mode. A range-bound integer for integer mode.

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