Random String Generator
Random strings with configurable character sets.
1 – 512
1 – 1000
About Random String Generator
The Random String Generator creates strings of any length from the character sets you select — uppercase, lowercase, digits and symbols in any combination. That covers test passwords, API-key-shaped values, form-input fuzzing and "what happens with a 500-character name?" boundary tests.
Pick length, count and character sets, and generate. Because you control the alphabet, you can also produce deliberately awkward inputs — symbol-heavy strings are a quick way to smoke-test input validation and escaping.
How to use
- Set the "Length" of each string and "How many" you need.
- Tick the "Character sets" to draw from: uppercase, lowercase, digits, symbols.
- Click "Generate strings" and copy the results.
Frequently asked questions
Are these strings secure enough to use as real passwords?
They are generated with the browser's random source and are fine for test accounts. For personal or production credentials, use a password manager — it also stores them safely, which matters as much as generation.
What length should test passwords be?
Test the boundaries your system claims: exactly the minimum, one below it, the maximum, one above. Add symbol-heavy and digit-only variants to exercise complexity rules.
Why include symbols in fuzz-style inputs?
Symbols are where escaping bugs live — quotes break string literals, angle brackets probe HTML rendering, backslashes trip serializers. A symbol-rich random string is a cheap, effective probe.