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Nano ID Generator

Generate compact, secure, URL-friendly unique Nano IDs online. Customize alphabet, string length, and batch size directly inside your web browser.

Compact 21-character IDs

URL-safe alphabet (A-Za-z0-9_-)

High cryptographic entropy

Zero dependencies

Step-by-Step Guide

How to Use Nano ID Generator Online

Follow these quick steps to process your data online directly in your browser with zero latency and 100% privacy.

Step 1Uses crypto.getRandomValues() to sample from a 64-symbol URL-safe alphabet.

Demonstration

Generates compact 21-character URL-friendly IDs using CSPRNG randomness.

Settings

Generated Nano IDs

V1StGXR8_Z5jdHi6B-myT
Uakgb_J5m9g-0DrIOEcVn
pxb16fAXXH-4X83f0f7tU
F9l5v3m-xZ4j_9wR1q8zY
Z8$mK3#vP1!xQ5&wR9*kK

Applications

Create compact, non-guessable IDs for URL shorteners.

Knowledge

Is Nano ID as unique as UUID?

Yes. With 21 characters from a 64-symbol alphabet, collision probability is comparable to UUID v4.

Workflow

Generate secure random UUID v4 and time-sorted UUID v7 identifiers online. Single or bulk UUID generation with hyphen/uppercase options.

Generate Universally Unique Lexicographically Sortable Identifiers (ULID) online. Inspect 48-bit timestamps and 80-bit randomness in your browser.

Generate cryptographically strong, random passwords and passphrases online with customizable length, symbols, and numbers using Web Crypto API.

Validate UUID and GUID strings online. Verify RFC 4122 compliance, detect UUID version (v1-v7), and check timestamp variants in your browser.