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Random String

What is Random String? (Quick Answer)

Generate random strings Free online tool, no registration required, 100% client-side processing.

Generate random strings

By Craftisle Team

About Random String — Free Online Tool

Generate cryptographically secure random strings for passwords, API keys, tokens, and test data. Customize length, character set (uppercase, lowercase, digits, symbols), and quantity. Uses the browser's Crypto.getRandomValues() API for true randomness.

How to Use Random String — Step by Step

  1. Set length and count

    Choose the string length and how many strings to generate.

  2. Choose character set

    Toggle uppercase, lowercase, digits, and symbols on/off.

  3. Generate

    Click Generate. Copy individual strings or all at once.

Use Cases for Random String

API key generation

Generate secure random API keys and secrets for your applications.

Test data

Generate random strings for database seeding and automated testing.

Password inspiration

Generate a strong random password as a starting point, then customize.

FAQ — Random String Free Online Tool

Is this cryptographically secure?

Yes. We use the browser's Crypto.getRandomValues() API, which is suitable for security-sensitive random generation.

Can I generate a UUID instead?

Use the UUID Generator tool for RFC-4122 compliant UUIDs (v4).

What is the maximum length?

Up to 512 characters per string. Generate up to 100 strings at once.

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