Crypto-secure · runs in your browser
Token Generator
Generate random tokens, API keys and strings with the character sets and length you choose, using the Web Crypto API.
Generated locally with the Web Crypto API, nothing is sent anywhere.
About this tool
Instantly generate UUIDs, random tokens and API-key-style strings with configurable length and format. Whether you need a v4 UUID for a database row, a URL-safe token for a one-time link, or a secret for a service, this tool produces them using secure browser randomness.
Everything is generated locally and never logged, so the values are safe to use as real secrets. Copy a single value or a batch directly into your code, environment file or password manager.
Frequently asked questions
What is a UUID v4?+
A version 4 UUID is a 128-bit identifier whose bits are almost entirely random. Collisions are practically impossible, which makes it ideal for distributed IDs that must be unique without a central authority.
Are these tokens secure enough for API keys?+
Yes, when you choose sufficient length. The values use the Web Crypto secure random generator. For API secrets, prefer 32+ random characters or bytes.
Is anything sent to a server?+
No. Tokens are generated entirely in your browser and never transmitted, so they are safe to treat as secrets from the moment they appear.