速度
第三方脚本
为何重要
Scripts from other domains (ads, chat widgets, analytics, A/B testing) add DNS lookups, connections and main-thread work you do not control. A slow third party can delay your whole page.
如何修复
- Remove tags you no longer use.
- Load the rest with async or defer, or after consent.
- Self-host small libraries instead of loading them from public CDNs.
使用以下工具检查
- Website Technology Checker – Find out which CMS, frameworks, analytics, CDN and server a website uses.
- Page Speed Test – Lighthouse performance score, lab metrics and real-user Core Web Vitals for any page.
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