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🔡 NanoID Generator

Generate compact, URL-safe NanoID-style IDs with custom length, alphabet presets, and collision-risk warnings.

NanoID generation checks

Validates custom alphabets, reports estimated entropy, flags short-ID collision risk, and keeps generation browser-local.

Runs in your browser

NanoID generation runs locally. Short IDs can collide; IDs are not passwords.

What this tool does

NanoID Generator creates short random IDs suitable for application records, URLs, and test data.

Why it is useful

It helps developers generate compact identifiers without setting up a database or UUID library for quick tasks.

How it works

The browser uses random values and the selected alphabet/length to create NanoID-style strings.

Best input

Choose a length and alphabet that fit collision-risk and readability needs.

Developer tip

For production systems, generate IDs in the trusted application environment and test collision assumptions at scale.

Privacy note

ID generation happens locally in your browser.

Important limitation

Shorter IDs collide more easily. Security-sensitive identifiers need enough entropy and a trusted generation environment.

Quick answers

Is NanoID shorter than UUID?

Often yes, depending on the chosen length and alphabet.

Can I use it for passwords?

Use the password generator for passwords; IDs and passwords have different requirements.

Common Use Cases

Generate compact public IDs

Create short IDs for URLs, invite codes, client-side records, and test data.

Customize allowed characters

Switch to lowercase, hex, or a custom alphabet when a downstream system restricts identifiers.

Create batches for tests

Generate many collision-resistant IDs at once for fixtures, mock APIs, and demos.

API examples

Call the same deterministic core through Utilito’s compact API router. Send only data you intentionally submit to the server-side endpoint.

Try in API playground →Schema →
Generate NanoID-style IDs with curl
curl
curl -X POST https://utilito.dev/api/run \
  -H "Content-Type: application/json" \
  -d '{"tool_id":"nanoid-generator","input":{"count":5,"length":21,"preset":"url"}}'
Generate NanoID-style IDs from JavaScript
javascript
const res = await fetch('https://utilito.dev/api/run', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    tool_id: 'nanoid-generator',
    input: { count: 5, length: 21, preset: "url" }
  })
});
const data = await res.json();
console.log(data.result.output || data.result.report);
Generate NanoID-style IDs from Python
python
import requests
payload = {
    "tool_id": "nanoid-generator",
    "input": {"count": 5, "length": 21, "preset": "url"},
}
result = requests.post("https://utilito.dev/api/run", json=payload).json()["result"]
print(result.get("output") or result.get("report"))

Random ID & Token Toolkit workflow

Move between UUIDs, ULIDs, NanoIDs, passwords, hashes, random numbers, usernames, and placeholder names while keeping randomness, secret-handling, and collision caveats visible.

🆔UUID Generator🆔ULID Generator🔑Password Generator🧮Hash Generator🎲Random Number / Sequence Generator👤Username Generator
View all in Hashing & IDs →