Random String Generator

For test data — not for real secrets. Strings are generated locally with cryptographic randomness, but production keys and passwords belong in a secrets manager or the Password Generator (Security & Privacy), not a browser tab.

Generators

Generate random strings

For QA fixtures, sample IDs, and placeholder tokens — you control the length and character sets exactly.

Length (1–128) How many strings (1–50) Character sets Lowercase (a–z) Uppercase (A–Z) Digits (0–9) Symbols (!@#$%^&* etc.) Exclude ambiguous (0 O 1 l I |)

Your strings

When NOT to use Random String Generator

Strings shown on a web page are not a key-management system — production secrets and API keys should be generated and stored by your secrets manager, never copied from a browser tab.
It generates character strings only; formatted patterns (like XXX-000) need a quick manual pass or your test framework's faker library.

Questions people ask

How random is it, really?

It uses your browser's cryptographic random generator (crypto.getRandomValues) with rejection sampling and unbiased shuffling — the same quality of randomness used by security software, not the predictable Math.random().

How is this different from the Password Generator?

The Password Generator (in Security & Privacy) is built for human-chosen account passwords, with strength guidance. This generator is for machine-facing strings — test fixtures, sample IDs, placeholder tokens — where you control length and charset precisely.

Which characters can I include?

Lowercase, uppercase, digits, and symbols are separate toggles — at least one set must be on. Ambiguous characters can be excluded for human-readable test data.