What is the purpose of the chrome://components page
Jul 31, 2025 am 04:19 AMChrome 的 chrome://components 頁面用于查看和更新瀏覽器內(nèi)置組件,幫助排查功能異常問題。該頁面顯示各組件名稱、版本及狀態(tài),支持手動檢查更新,適用于確認 PDF 查看器、Flash 插件等是否因版本過舊導(dǎo)致問題。常見組件包括 Google PDF Viewer(用于顯示 PDF)、Native Messaging Host(支持擴展與本地應(yīng)用通信)和 Network Time Tracker(同步網(wǎng)絡(luò)時間)等。若組件狀態(tài)異常,可嘗試點擊“檢查更新”、重啟瀏覽器或更新 Chrome 本身。部分組件無法手動控制,需依賴系統(tǒng)后臺管理。
Chrome 的 chrome://components
頁面是用來查看和更新某些內(nèi)置組件的工具。這些組件是 Chrome 瀏覽器運行時依賴的一些小模塊,比如 PDF 查看器、Flash 插件(舊版)、清理工具等。它不像擴展程序頁面那樣常用,但對排查一些功能異常的問題很有幫助。

查看瀏覽器組件的狀態(tài)
在 chrome://components
頁面中,你可以看到一列組件名稱、當前版本以及狀態(tài)。有些組件會自動更新,但你也可以手動點擊“檢查更新”來觸發(fā)更新流程。
這個頁面適合用來確認某個功能是否因為組件版本過舊而出現(xiàn)問題。例如:

- 某些網(wǎng)頁無法加載 PDF
- 網(wǎng)頁提示“需要更新 Flash”
- 清理工具打不開
如果你遇到類似情況,不妨打開這個頁面看看有沒有紅色或黃色的提示,通常代表組件狀態(tài)異常。
常見組件說明與用途
下面是一些常見的組件及其作用:

- Adobe Flash Player(已棄用):曾經(jīng)用于播放網(wǎng)頁中的 Flash 內(nèi)容。
- Google PDF Viewer:Chrome 自帶的 PDF 閱讀器,如果失效會導(dǎo)致 PDF 無法顯示。
- Native Messaging Host:允許 Chrome 擴展與本地應(yīng)用通信。
- Network Time Tracker:用于同步網(wǎng)絡(luò)時間,確保安全證書驗證正常。
- User Experience Improvement Program:負責(zé)收集匿名使用數(shù)據(jù)。
這些組件不一定每個用戶都會用到,但在特定場景下能派上用場。
組件出問題怎么辦?
如果某個組件狀態(tài)顯示為“失敗”或者“需要更新”,可以嘗試以下幾步:
- 點擊“檢查更新”按鈕,讓 Chrome 嘗試重新下載最新版本
- 如果無效,可以嘗試重啟瀏覽器甚至系統(tǒng)
- 更新整個 Chrome 瀏覽器本身,有時候組件更新依賴主程序版本
注意:并不是所有組件都能手動控制,有些只能由系統(tǒng)后臺管理。
基本上就這些。這個頁面雖然不常被用到,但在排查瀏覽器部分功能異常時還是挺有用的,特別是當你懷疑是 PDF 或插件類問題時。
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