WebDAV Certificate Checker

Inspect the TLS/SSL certificate of a WebDAV server — expiry date, issuer, SANs, key strength. Works with ownCloud, Nextcloud, and any HTTPS-based WebDAV server.

Must be an https:// URL. Only the TLS certificate is inspected — no authentication is needed.

What does this tool check?

  • Certificate subject & SANs — the domain(s) the certificate covers.
  • Issuer — whether the certificate is signed by a trusted CA or self-signed.
  • Expiry date — days remaining before the certificate expires.
  • Key strength — algorithm and key size (e.g., RSA 2048-bit, ECDSA 256-bit).
  • Signature algorithm — the hash algorithm used to sign the certificate (e.g., SHA-256).