DeNiSe operating a secure machine that separates a PFX package into certificate, private-key and CSR files
PKCS#12 extractor

PFX Decoupler

Separate a PFX/P12 into its certificate, private key and chain, then create a fresh CSR when needed.

Private key safety
The PFX password is used only during this request and is never stored or logged. Extracted files are kept outside the public web root, expire quickly and are deleted after download. The exported private key is unencrypted—store it securely.
Maximum file size: 5 MB.
Leave blank only when the PFX has no password.
The CSR keeps the subject identity where available. Review it before renewal because certificate extensions such as SANs are not copied automatically.