Generate random strings from a chosen character set with secure browser randomness when it is available.
Duplicate characters are collapsed automatically so each available character has an even chance.
Generated with secure browser randomness when available.
The tool selects one character at a time from your chosen alphabet using random indexes drawn from secure browser randomness when available.
Duplicate characters in the alphabet are removed first so each visible character has the same selection chance.
Yes. Each position is sampled independently, so repeated characters are normal.
This keeps the distribution even across visible characters instead of giving repeated alphabet entries extra weight.
It uses secure browser randomness when available, which is appropriate for many token-like uses, though full production security still depends on your broader workflow.
They are useful for fixtures, sample credentials, placeholder codes, IDs, and mock API values.
Longer strings and larger alphabets both increase the number of possible outputs.
Hex strings are compact and widely recognized, but alphanumeric strings can be denser with mixed-case characters.
Custom alphabets are often the simplest way to match a product-specific character policy.
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