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Security & Privacy

Secure Token Generator

Generate cryptographically secure random tokens — API keys, secrets, session IDs, UUIDs and salts — in your browser. Choose format and length, generate in bulk. Nothing is stored. Free.

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💡 About these tokens

  • Generated with your browser's cryptographically secure random source (crypto.getRandomValues) — suitable for API keys, secrets, session IDs and salts.
  • Nothing is sent to a server and nothing is stored. Refresh and it's gone — copy what you need.
  • For secrets, longer is better: 32+ hex characters (128 bits) is a sensible minimum.

Secure Token Generator

Generate cryptographically secure random tokens — API keys, secrets, session IDs, UUIDs and salts — right in your browser. Choose the format and length, generate in bulk, and copy. Uses your browser's secure random source; nothing is sent or stored. Free, no sign-up.

What makes a token secure

A secure token must be unpredictable. If it comes from a weak random source, an attacker can guess or reproduce it and hijack sessions or forge API access. This tool draws from <code>crypto.getRandomValues</code>, the browser's cryptographically secure random number generator — the same class of source used for real security keys — so the output is genuinely unguessable.

How to use it

Pick, size, generate:

  • Choose a format: hex, URL-safe Base64, alphanumeric, UUID v4 or API-key style.
  • Set the length, and how many tokens you need at once.
  • Click Generate, then copy — regenerate any time for fresh values.

Choosing a format

<strong>Hex</strong> is universally safe and easy to store. <strong>Base64 URL-safe</strong> packs more entropy per character and is fine in URLs and headers. <strong>Alphanumeric</strong> avoids symbols for systems that dislike them. <strong>UUID v4</strong> is ideal for unique identifiers and database keys. <strong>API-key style</strong> adds a readable prefix (like <code>sk_</code>) so keys are easy to recognise in logs and code.

How long should a token be

For anything secret, aim for at least 128 bits of entropy — roughly 32 hexadecimal characters or 22 Base64 characters. The tool shows the approximate entropy as you adjust the length so you can see when you've reached a safe margin. When in doubt, go longer; the cost of a bigger token is negligible next to the risk of a guessable one.

Everything stays local

Tokens are generated entirely in your browser. Nothing is transmitted to any server, nothing is logged, and nothing persists after you leave the page — so refreshing discards them. Copy the values you need into your password manager, environment file or secrets store right away.

Handling secrets responsibly

A token is only as safe as how you store it. Keep secrets out of source control, put them in environment variables or a dedicated secrets manager, and rotate them if they're ever exposed. To hash a secret before storing it, use our SHA-256 generator; to check whether a password has leaked, try our Pwned Password Checker.

FAQ

Are these tokens cryptographically secure?
Yes. They come from crypto.getRandomValues, the browser's cryptographically secure random generator, making them suitable for keys, secrets and session IDs.
Is this tool free?
Yes. It's completely free and needs no account or sign-up.
Are the tokens sent to a server?
No. They're generated locally in your browser. Nothing is transmitted, logged, or stored.
How long should my token be?
Aim for at least 128 bits of entropy — about 32 hex characters. The tool displays the entropy so you can pick a safe length.
Which format should I use?
Hex is universally safe; Base64 URL-safe is compact and URL-friendly; UUID v4 suits unique IDs; API-key style adds a readable prefix.
Can I generate many tokens at once?
Yes. Set the count to generate up to 50 tokens in one go, then copy them all together.
How should I store a generated secret?
Keep it out of source control — use environment variables or a secrets manager, and rotate it if it's ever exposed.

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Pro tip: pair this tool with Robots.txt Exposure Checker and Cookie Security Checker for a faster SEO workflow.