Search the current site (站内搜索) Chrome 插件, crx 扩展下载

                    
一个使用 Google 搜索任意网站所有页面的工具栏按钮。
一个工具栏按钮扩展。使用Google、Yahoo、Bing搜索引擎为您提供当前浏览网站的站内搜索功能。
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Search any site you're on by the simple click of a button.  The search is done not only on the 1 page you are viewing at the time you click as [Ctrl]+[F] does but instead Google is used to "site search" within ALL pages of the site.  Search websites the easy way!

How to customize:
Right-click the 🔍 "search this site" button, in the menu that pops up, click on "Options".  There you can:
 ●  change the search engine that's used to search on domains from Google to Yahoo, Bing, or Yandex (a Russian search engine);
 ●  set the button to directly open the search engine instead of a 🔍 popup;
 ●  activate the feature to be able to search a domain from the context menu;
 ●  activate the feature that lets you choose between subsites in the 🔍 popup.

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Want the same functionality in Firefox? Install the "Site Searcher" add-on from
https://addons.mozilla.org/addon/site-searcher/