RSA Key Pair Generator
Generate RSA 2048, 3072 or 4096-bit public and private key pairs in PEM format, locally in your browser.
About the RSA Key Pair Generator
Create RSA key pairs for testing encryption, JWT signing (RS256), SSH-style experiments and API integrations. Keys are generated by your browser's Web Crypto API and exported in standard PEM format (SPKI public key, PKCS#8 private key). Nothing is uploaded, but for production servers we still recommend generating keys on the machine that will use them.
Frequently asked questions
Is the RSA Key Pair Generator free?
Yes. The RSA Key Pair Generator on Apex Tool Station is 100% free with no signup and no watermark. Browser tools have no usage limits.
Are my files or data uploaded to a server?
No. Everything runs locally in your browser using JavaScript. Your files and text never leave your device, which makes it safe for private documents.
Does it work on mobile?
Yes. The tool works on any modern browser on Android, iPhone, Windows, Mac and Linux.