Random String Generator
Generate a random string of any length from letters, numbers, and symbols — handy for test data, unique codes, and placeholder tokens.
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How the Random String Generator works
A random string generator is the building block behind test fixtures, placeholder unique identifiers, short codes, and — with the right character set and enough length — secure tokens. This tool lets you compose your own alphabet from four character classes and builds each string one cryptographically secure character at a time.
For anything security-sensitive, favour longer strings with a wide, mixed character set (all four classes enabled) — see the dedicated Password Generator tool for a version tuned specifically for memorable, strong passwords rather than generic strings.
How to use it
Frequently asked questions
Is this safe to use for security tokens?
The character draws are cryptographically secure, but for actual account passwords, use the dedicated Password Generator, which is tuned to avoid ambiguous characters and enforce stronger defaults.
Can I generate strings with only digits?
Yes — untick uppercase, lowercase, and symbols, leaving only digits checked, to get numeric-only strings.
What's the maximum length?
Up to 256 characters per string, which comfortably covers any common test-data or token use case.