Category: Developer tools
Nanoid Generator
Generate URL-safe random IDs with a custom length, count and alphabet
Generate random, URL-safe unique IDs with your choice of length, count and character alphabet. Uses your browser's cryptographically secure random number generator; nothing is sent anywhere.
The result will appear here.
Everything on this page is processed in your browser. Nothing is uploaded.
What this tool does
A nanoid-style ID is a short random string built from a chosen character alphabet, commonly used for URL slugs, database keys and session tokens where a full UUID is longer than necessary. This tool draws each character from the Web Crypto API's random number generator, so the output is suitable for identifiers that need to be hard to guess, not just visually random.
How to use it
- Set the ID length and how many IDs to generate.
- Pick an alphabet: URL-safe, alphanumeric, numeric-only, or a custom set of characters.
- Click Generate for a fresh batch, then copy the list.
Privacy
This tool runs entirely in your browser. Your input is never uploaded, stored or shared — closing the tab removes it.
Frequently asked questions
- How random are the generated IDs?
- Each character is drawn using the Web Crypto API's cryptographically secure random number generator, the same source browsers use for security-sensitive values.
- What does the URL-safe alphabet include?
- Uppercase and lowercase letters, digits, underscore and hyphen: every character that's safe to use in a URL path or query string without encoding.
- Can I use my own character set?
- Yes. Choose Custom and enter any characters; duplicates are removed automatically before generating IDs.