安全
SSL 证书
为何重要
An invalid, expired or mismatched SSL certificate shows a full-page browser warning, which stops almost every visitor.
如何修复
- Renew the certificate before it expires – enable automatic renewal.
- Make sure it covers every hostname you use (with and without www).
使用以下工具检查
- SSL Certificate Checker – Check an SSL/TLS certificate’s validity, expiry date, issuer, hostnames and protocol.
评分：通过的检查获得全部权重，警告获得一半，错误则不得分。 SEO 评分如何运作