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Record GeneratorsA free tool by NullFortis
DKIM Generator
Create a DKIM key pair, in your browser
What is it?
Generates a real RSA public/private key pair for DKIM signing, entirely inside your browser.
Why it matters
You need a real key pair to set up DKIM signing at all — this produces one without separate cryptography tooling, and the private half never leaves your browser.
Impact if ignored
The private key is what your mail server uses to actually sign outgoing mail; losing it means generating and republishing a new selector.
Common use cases
- Setting up DKIM signing on a new mail server
- Rotating an old or weak key
Try it now
Generated entirely in your browser — nobody else ever sees or stores this private key. Copy it now and add it to your mail server's DKIM configuration; if you navigate away, it's gone for good.