Random String Generator
Generate random strings, tokens and API keys with custom length and character sets.
What Is the Random String Generator?
The Random String Generator creates random strings, tokens and keys using your browser's cryptographically secure randomness. Choose the length, how many to generate, and which character sets to include (lowercase, uppercase, digits, symbols). Nothing is sent to a server.
How It Works
Set the length and count, tick the character sets you want, and click Generate. Copy or download the results. Each string is built with crypto.getRandomValues for unbiased, secure randomness.
When to Use It
Use it for API keys, tokens, test fixtures, salts, coupon codes, or any time you need unpredictable random strings in bulk.
Frequently Asked Questions
- Is it secure?
- Yes. It uses the Web Crypto API (crypto.getRandomValues), the same secure source recommended for tokens and keys.
- How many can I generate at once?
- Up to 500 strings of up to 256 characters each, per click.
Last reviewed: 2026-06-27
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