Random String Generator

What is a Random String Generator?

A random string generator creates unpredictable sequences of characters for passwords, API keys, tokens, IDs and test data. Fontily's uses the browser's cryptographically strong random API and lets you choose the length and character set, so the output is secure and fit for purpose.

Features

• Cryptographically secure randomness.
• Adjustable length from 4 to 64 characters.
• Multiple character sets — alphanumeric, letters, numbers or hex.
• One-click copy and instant reroll.
• Private — generated locally, never stored.

How to Use the Random String Generator

1. Set the length you need.
2. Choose a character set.
3. Copy the generated string, or reroll for a new one.
4. Use it as a password, token or test value.

Benefits

Reusing predictable strings is a security risk. A secure generator gives you strong, unique values for every account and service, plus realistic test data for development — all without writing code or trusting weak randomness.

Use Cases

• Strong passwords and passphrases.
• API keys, tokens and secrets.
• Database IDs and test fixtures.
• One-time codes and nonces.

Conclusion

Fontily's Random String Generator produces secure, customisable strings for passwords, tokens and test data — generated privately in your browser. Configure above and copy your string — free and secure.