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NanoID generator
Crypto and hashing
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About this tool
Generate short random IDs from a configurable alphabet.
Common uses
- Generate short random IDs from a configurable alphabet.
- Choose a length from 4 to 64, a count from 1 to 100 and an alphabet containing at least two distinct characters.
How to use it
- 1.Choose a length from 4 to 64, a count from 1 to 100 and an alphabet containing at least two distinct characters.
- 2.Generate and copy the newline-separated IDs.
Limits and notes
- Repeated alphabet characters are removed. The default alphabet contains underscore and tilde, so it is not identical to every Nano ID implementation’s default alphabet; collisions are not checked.
- Use an ASCII alphabet for predictable IDs: selection indexes UTF-16 code units, so supplementary Unicode characters can be split.
Frequently asked questions
What does this tool do?
Generate short random IDs from a configurable alphabet.
What should I check before using the result?
Repeated alphabet characters are removed. The default alphabet contains underscore and tilde, so it is not identical to every Nano ID implementation’s default alphabet; collisions are not checked. Use an ASCII alphabet for predictable IDs: selection indexes UTF-16 code units, so supplementary Unicode characters can be split.