Random String Generator

What is a Random String Generator?

A Random String Generator instantly produces random text from the character types you enable: uppercase, lowercase, digits and symbols. It uses the browser crypto.getRandomValues API with unbiased sampling, so results suit tokens, salts, one-time codes and test data.

What can you configure?

• Uppercase (A–Z): capital letters.
• Lowercase (a–z): lower-case letters.
• Digits (0–9): numbers.
• Symbols (!@#$…): punctuation and special characters.
• Length: any value from 1 to 128 characters; you can regenerate as many times as you like.

FAQ

• Is it really random? Yes — values come from crypto.getRandomValues, a cryptographic-quality source; every generation is fresh and independent.
• Can the same string appear twice? Randomness means a repeat is technically possible, but with long strings the chance is astronomically small.
• Is the result stored or uploaded? No — generation happens locally in your browser and nothing is sent to any server.

What to use random strings for

• Password salts and reset tokens that must never repeat.
• Temporary identifiers for test data and fixtures.
• Example keys in documentation and demos.
• Unique name suffixes when copy-pasting between environments.

Length and entropy

Longer strings with a bigger alphabet give far more combinations. For security-critical values like salts or tokens, prefer 32+ characters from the full character set. For display or test purposes, shorter strings are fine and easier to type.