SSL Certificate Test
Verify HTTPS certificate security and expiration
Result for: facebook.com
Tested at: 2026-04-20 23:14:29
80
优秀
SSL Score: 80/100
🔒 Certificate Status
Certificate Valid
✓ Valid
Days Remaining
8 days
📋 Certificate Details
Subject
*.facebook.com
Issuer
DigiCert Global G2 TLS RSA SHA256 2020 CA1
Certificate Type
Commercial
Valid From
2026-01-27 08:00:00
Valid To
2026-04-28 07:59:59
Signature Algorithm
RSA-SHA256
💡 Security Suggestions
证书有效期较短
证书8天后过期，建议提前安排更新。