Can a .HAR file be downloaded?

Product Support
1

I want to understand whether it’s possible to download a .HAR (HTTP Archive) file during test sessions on LambdaTest. Specifically, I’m looking to know if this option is available across different testing environments, such as desktop browsers, mobile browsers, or mobile app testing.

Can someone clarify where . HAR file downloads are supported?

2

Hey Ian,

Yes, you can download a .HAR file when running tests on mobile browsers or during mobile app testing on LambdaTest. However, this capability is not currently available for desktop browser testing.

Once downloaded, HAR files can be analyzed using a variety of tools, such as:

  • Chrome DevTools (Network tab → right-click → “Save all as HAR”)
  • Online HAR analyzers
  • Performance monitoring tools

These HAR files provide detailed insights into network activity, including request/response headers, timing information, cookies, payload sizes, and more, making them extremely useful for debugging performance and network-related issues.

To learn how to download a .HAR file on LambdaTest, follow the official support documentation here: https://www.lambdatest.com/support/docs/extended-debugging-options/#4-download-har-file