Random String Generator
Pick a length, choose which character sets to include, and generate one or many random strings at once — handy for test fixtures, temporary IDs, and placeholder data.
Overview
Test data, placeholder IDs, and sample values often just need to be random and the right shape — not memorable, not secret. This tool generates random strings from any combination of uppercase letters, lowercase letters, digits, and symbols, in bulk if needed, using the browser's Web Crypto API rather than a predictable pseudo-random source. For account passwords specifically, use the dedicated Password Generator instead.
Examples
12-character alphanumeric string
Length: 12, Uppercase + Lowercase + Numbers
aB3xQ9mK2pL7
How It Works
- Choose a string length.
- Choose which character sets to include — uppercase, lowercase, numbers, symbols.
- Set how many strings to generate at once, then click Generate.
FAQ
No. Strings are generated entirely in your browser using the Web Crypto API and never leave your device.
For account passwords, use the dedicated Password Generator instead — this tool is aimed at general-purpose test data and placeholder values, though it uses the same secure random source.
The tool shows an error and won't generate anything — at least one character set must be selected.
Up to 100 per click, one per line, ready to copy as a list.