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Secret key generator
Generate a secret key online: random hex strings for the SECRET_KEY, APP_SECRET or JWT secret of a Django, Laravel or Node app. Pick how many bytes you want and copy the result. The keys are made in your browser and never uploaded.
How to generate a secret key
- 1Set how many keys you want
- 2Set the length in bytes, 20 by default
- 3Click "Generate", then copy the key
- Hex keys, two characters per byte.
What you get
- Made on your device.A secret that is uploaded is no longer secret. These never leave your browser.
- Secure randomness.Every byte comes from the browser's crypto random generator.
- You pick the strength.From 4 to 256 random bytes per key.
What you can do
- Make keys of 4 to 256 bytes. Each byte is written as two hex characters, so 32 bytes give 64 characters.
- Make 1 to 500 keys in one go.
- Use them as a Django SECRET_KEY, a Laravel or other framework secret, or an HMAC key for signing JWTs.
- Copy with one button.
Good to know
- The "Length" field counts bytes, not characters. The default of 20 bytes gives 40 hex characters.
- Only 0 to 9 and a to f appear. If your framework wants base64 or a special format, convert it yourself.
- The tool does not store anything. Put the key in an environment variable or secret manager and never in your repository.
Questions
How long should a secret key be?
For an HMAC or JWT secret, 32 bytes (64 hex characters) is a common choice. The default of 20 bytes is a minimum.
Can I use it as a Django SECRET_KEY?
Yes. Django accepts any long random string, and a hex key works.
Is the key sent anywhere?
No. It is made in your browser and shown only to you.
Why hex and not base64?
Hex uses only digits and a to f, so it is safe in .env files, shells and URLs without quoting.