Random Token Generator
Generate browser-based random tokens for API keys, webhook secrets, session IDs, and testing with Base64URL, alphanumeric, or hex output.
Allowed range: 8 to 512 characters. Longer tokens give more search space.
Good default for API tokens, URLs, headers, and webhook secrets.
Generated Random Token
Security Note
Token generation happens locally in your browser using Web Crypto randomness. Generated tokens are not uploaded or stored by this tool. Copy and store real production secrets only in your own trusted secret manager or application environment.
Generating Random Tokens for APIs, Webhooks, and Testing
Random tokens are used as API keys, webhook secrets, session IDs, password reset values, verification strings, invitation codes, temporary credentials, and test identifiers. Good tokens should be hard to guess, long enough for the risk level, and stored carefully after they are created.
This generator uses browser cryptographic randomness and avoids modulo bias by rejecting random bytes that would not map evenly into the selected character set. You can generate Base64URL-safe tokens, alphanumeric tokens, hexadecimal tokens, or numeric-only values when a system requires digits.
The tool only creates the token string. Your application still needs the right storage, hashing, rotation, expiration, rate limiting, and access-control rules around any token that becomes a real secret.
How to Use the Random Token Generator
- Choose a token length.
- Select Base64URL, alphanumeric, hex, or numeric output.
- Click Generate Token.
- Review the estimated entropy and any warnings.
- Copy the token into your application or secret storage workflow.
Common Use Cases
- Creating development API keys and test bearer tokens.
- Generating webhook signing or verification secrets.
- Creating random session identifiers for local experiments.
- Preparing invitation, reset, or one-time workflow values.
- Generating unique strings for integration tests and fixtures.
- Creating URL-safe secrets for headers, links, and config files.
- Replacing weak placeholder values during development.
Example Random Tokens
Base64URL-style token:
qM7kLp2xW9vBa8NdR4sHt1YuE6zFc0Jp
Example API header:
Authorization: Bearer your_random_token_here
Choosing a Token Format
- Base64URL: A good default for API tokens, headers, URLs, and config values because it avoids plus, slash, and padding characters.
- Alphanumeric: Useful when you want tokens that are easier to paste into systems that reject punctuation.
- Hex: Useful when a library or database expects lowercase hexadecimal strings.
- Numeric: Use only when required. Numeric codes need extra controls such as short expiry, rate limiting, and replay protection.
Frequently Asked Questions
Is this using Math.random?
No. The generator uses the browser Web Crypto API through crypto.getRandomValues, which is designed for cryptographic random values.
Which token length should I choose?
For long-lived API tokens and webhook secrets, use at least 128 bits of estimated entropy. The report shows an estimate based on the selected length and character set.
Can I use these tokens directly in production?
The generated string can be used as a secret, but production use also needs safe storage, rotation, logging controls, expiry, and access checks in your own system.
Are generated tokens uploaded anywhere?
No. Token generation happens locally in your browser.
Why does numeric-only output show stronger warnings?
Numeric tokens have fewer possible characters per position. They need longer lengths or extra application protections to be suitable for sensitive workflows.