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Nano ID generator
Generate Nano ID style IDs online: short, URL-safe strings made of letters, digits, underscore and hyphen. Choose the length and how many you need, then copy them. Nothing is uploaded: the IDs are made in your browser.
How to generate Nano IDs
- 1Set how many IDs you want
- 2Set the length, 20 by default
- 3Click "Generate", then copy the list
- Short IDs you can use in a URL as they are.
What you get
- URL-safe.Only A to Z, a to z, 0 to 9, _ and - are used, so no encoding is needed in a link.
- Secure randomness.The characters come from your browser's crypto random generator.
- Nothing is uploaded.The IDs are made on your device.
What you can do
- Make IDs of 4 to 256 characters. The default is 20.
- Make 1 to 500 IDs in one go.
- Use them as short keys, slugs, file names or share codes.
- Copy the list with one button.
Good to know
- The alphabet is the Nano ID one: 64 characters, 26 uppercase, 26 lowercase, 10 digits, _ and -.
- The default length is 20, not the 21 of the Nano ID library. Set 21 if you want to match it.
- Random IDs are not sorted by time. For that, use ULID or UUID v7.
Questions
What is a Nano ID?
A short, random, URL-safe ID. It is shorter than a UUID and easy to put in a link.
How long should a Nano ID be?
The longer, the less likely a repeat. 20 characters is a good default for most uses.
Can I use them in URLs?
Yes. Every character is safe in a URL.
Is this the official Nano ID library?
No. It makes IDs with the same alphabet and the browser's secure random generator, but it is its own code.