For performance analysis we would like to archive the detail performance for each HTTP. Chrome provide an useful tool—HAR to help us save and reuse the HTTP performance.

Let’s have a look together.

Basic info: HAR (HTTP Archive) is a file format used by several http session tools to export the captured data.

(1) Press F12 to enter the debug mode.

Right click on the HTTP and choose “Save as HAR context”.

You will get the downloaded file with .har postfix.

(2) Access below HTTP. it’s online translate website.
https://toolbox.googleapps.com/apps/har_analyzer/

這個網站可以幫你加載本地文件然后進行渲染，顯示該HAR文件對應的HTTP請求的各項性能指標。

總結

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