Generate secure random strings
This random string generator creates unpredictable strings from the character sets you choose: lowercase, uppercase, numbers, and symbols. Set the length, decide how many you need, and generate them all at once. It uses your browser's cryptographic random generator, so the output is suitable for tokens, API keys, test data, and temporary passwords.
Common uses
- Create API keys, tokens, and secrets.
- Generate temporary passwords or invite codes.
- Produce random test or seed data for development.
Frequently asked questions
How do I generate a random string?
Set the length, pick which character sets to include, and a string is generated instantly. Adjust the count to make several at once.
Are the strings cryptographically secure?
Yes. They are built with the browser's crypto.getRandomValues generator, which is designed for security-sensitive use.
Can I control which characters are used?
Yes. Toggle lowercase, uppercase, numbers, and symbols on or off to match the format your system expects.
Are the strings generated privately?
Yes. They are created in your browser and never sent anywhere.