テクニカル SEO
HTTP から HTTPS へのリダイレクト
重要な理由
If http:// does not redirect to https://, two versions of the site exist and visitors may land on the insecure one.
修正方法
- Add a permanent 301 redirect from every http:// URL to its https:// version.
- Enable HSTS once the redirect works everywhere.
次のツールで確認
- Redirect Generator (.htaccess & Nginx) – Create 301 redirect rules for Apache .htaccess and Nginx, including HTTPS and www.
- Redirect Checker – Trace every hop of a redirect chain with status codes and timings.
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