How to use the Secret Key Generator
- Set your preferences. Choose Key Size, Encoding, How many and Prefix.
- Click “Generate”. Fresh results are generated instantly using a secure random source.
- Copy your favourites. Copy individual results or everything at once, or download them.
- Generate again. Click again as many times as you like — it’s unlimited and free.
About this tool
Password, hash, UUID, token, cipher and encoding tools.
Read the complete Secret Key Generator guide
Frequently asked questions
Is the Secret Key Generator free to use?
Yes. The Secret Key Generator on Gemma-4 is 100% free with no sign-up, no limits and no watermark. An optional free account lets you save favourites.
Is my data private?
Yes. Your inputs are processed instantly and are not stored on our servers.
Does it work on mobile phones?
Absolutely. The Secret Key Generator is fully responsive and works on Android, iPhone, tablets and desktop browsers such as Chrome, Edge, Safari and Firefox.
Are the results truly random?
Yes — the generator uses your browser’s cryptographically secure random number generator (crypto.getRandomValues), so every result is unbiased.
Who is the Secret Key Generator useful for?
It is popular with security-conscious users, developers handling secrets and hashes, IT administrators — anyone who needs quick, reliable help with passwords, hashing and secure identifiers.