# 前端效能調校-當機等候網頁 ## 尚未調校 https://a8521238520.github.io/other/ ![](https://i.imgur.com/Iqx4k66.png) ## Accessibility ## html element does not have a[lang] attribute ![](https://i.imgur.com/FcBYl2y.png) **在html中添加這行** ``` <html lang="zh"> ``` ![](https://i.imgur.com/1JZUVeM.png) ## SEO ## Document does not have a meta description ![](https://i.imgur.com/2yYjtAp.png) **在html中添加這行** ``` <meta name="description"content="example"/> ``` ![](https://i.imgur.com/URURjBP.png) ## Performance ## 缺少 Largest Contentful Paint ![](https://i.imgur.com/qAhV4fx.png) 需要一個class 叫 lcp ``` <div class="lcp"> <h2>"description"</h2> <p>"description"</p> </div> ``` ![](https://i.imgur.com/BVxxSDT.png) 完成 https://a8521238520.github.io/other1/