Draw reproducible-size number sets using cryptographically secure browser randomness.
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Method
Generation method
Random values use the browser cryptography API. QR output is encoded directly into a canvas, while password and number settings define the available search space or numeric range.
Generated identifiers and codes should be tested in their destination workflow. A random value does not by itself provide account security, uniqueness guarantees, or a durable redirect service.
Questions
Random Number Generator FAQ
Are the numbers cryptographically random?
The generator uses crypto.getRandomValues and rejection sampling for integer ranges, avoiding the modulo bias of simple rounding.
When can numbers be unique?
Unique output is available when the requested integer quantity does not exceed the number of possible values in the inclusive range.
