By default, references to external JavaScript files will block the page from rendering while they are fetched and executed. Often, these files can be loaded in a different manner, freeing up the page to visually render sooner.
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2022-10-07
Images Must Have Alternate Text
2022-10-07
IDs Of Active Elements Must Be Unique
2022-10-07
Elements Must Have Sufficient Color Contrast
2022-10-07
The main thread was blocked
When files block the main thread, users are unable to interact with the page content. Typically, parsing and executing large JavaScript files, as well as running long JavaScript tasks can block the main thread and should be avoided. These files had high thread blocking times:
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2022-10-07
如何排除禁止轉譯的資源
網頁的資源過多，因此妨礙了首次顯示畫面的時間。建議你先載入重要的內嵌 JavaScript/CSS，並延後載入不重要的 JavaScript/樣式。
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