BYTETOOLS

Secure Token Generator

Generate cryptographically secure random tokens for APIs, sessions and keys. Choose the length and a hex, base62 or base64url charset, and create several at once.

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  • Cryptographically secure via crypto.getRandomValues
  • Charset presets: hex, base62 and base64url
  • Adjustable length for any entropy requirement
  • Generate multiple tokens in one batch
  • Individual copy button per token
  • 100% private — tokens are generated locally

How to use the Secure Token Generator

  1. 1

    Choose the token length in characters.

  2. 2

    Pick a charset preset: hex, base62 or base64url.

  3. 3

    Set how many tokens to generate at once.

  4. 4

    Click Generate to create secure random tokens.

  5. 5

    Copy any token with its individual copy button.

About the Secure Token Generator

The ByteTools Secure Token Generator creates random, high-entropy strings for API keys, session identifiers, CSRF tokens, password-reset links and anything else that needs to be unguessable. Every token is drawn from crypto.getRandomValues, the browser's cryptographically secure random number generator.

Pick the length and a character set: hexadecimal for classic hex tokens, base62 for compact alphanumeric keys, or base64url for URL-safe strings with no padding. Generate one token or a batch, each with its own copy button, so you can seed a whole config in seconds.

Tokens are generated entirely in your browser with JavaScript. Nothing is uploaded or stored, and the tool works offline, so the secrets you create never leave your device and stay genuinely random and private.

Frequently asked questions

What makes a token secure?

A secure token is long and generated from a cryptographically secure random source, so it cannot be guessed or predicted. This tool uses crypto.getRandomValues and lets you set enough length that brute-forcing the token is infeasible.

Which charset should I choose?

Use hex for a familiar, widely compatible format, base62 for compact alphanumeric keys without special characters, and base64url when the token goes into a URL or filename, since it avoids characters that need escaping.

How long should an API token be?

For API keys and session IDs, aim for at least 128 bits of entropy, which is roughly 32 hex characters or 22 base64url characters. Longer is fine and adds margin; the tool shows enough length options to reach a strong value.

Can I generate several tokens at once?

Yes. Set the quantity and the generator produces a batch of independent tokens together, which is convenient when seeding multiple environment variables or issuing keys to several services. Each has its own copy button.

Are generated tokens stored or sent anywhere?

No. Tokens are created in your browser and never transmitted or saved. Refreshing the page discards them, so copy any token you need into your configuration or secret manager right away.

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