技术 SEO
www / 不带 www
为何重要
If both www and non-www versions load, search engines see duplicate sites and links are split between them.
如何修复
- Choose one version (with or without www).
- 301-redirect the other version to it and use the chosen one in canonical tags and sitemaps.
使用以下工具检查
- 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.
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