Certificate Viewer

Certificate Viewer helps you inspect a server’s TLS/SSL certificate directly from your Android device. Enter a hostname, URL, or IP address and optional port to retrieve a clear certificate report. Quickly understand whether a certificate is valid, trusted by Android, and matched to the requested hostname.

The report includes:

• Certificate expiration date and days remaining

• Subject and issuer details

• Subject Alternative Names (SANs)

• Hostname-match status

• Android trust result and date validity

• TLS version and negotiated cipher suite

• Public-key and signature algorithms

• Certificate-chain length

• Server IP address

• SHA-256 certificate fingerprint

• Serial number

Use Certificate Viewer to troubleshoot HTTPS connections, verify certificate deployments, compare certificate details, or share a report with your team.