How to read HAR file

[AG]

Hello Expertize,

Multiple times, we are asked to provide the HAR file for debugging the issue. Could anyone guide me, on how to ready that file for issue debugging?

Thanks

[Matthias Gaiser _K15t_ · Accepted solution]

Hi @AG

I‘d recommend to use an offline HAR viewer, e.g. this one.

Why offline? Your HAR file may contain sensitive data, eg for authentication.

Does this already help or do you need more information?

Cheers,
Matthias

[AG]

Thanks For your Response @Matthias Gaiser _K15t_  My query is how to figure out by looking at HRA file. What cause the error? Why is the error? I mean how to come to conclusion that what is root cause of the error appearing on the browser?

[Matthias Gaiser _K15t_]

I see.

That‘s hard to explain in a general way since thr problem depends on your use case.

The HAR file contains all requests made by your browser (tab) in the time frame of your recording. I‘d usually start looking at the requests which failed with HTTP status codes that represent errors like 4xx or 5xx, eg 400.

Afterwards, it might make sense to look at their payload. A HTTP 400 for example states that sth seems to be wrong with the request data. Examining it might reveal what exactly was the problem.

Other than that, you need to know the system you’re analyzing on a technical level, so that you can make a meaningful interpretation of it.

[AG]

Thanks @Matthias Gaiser _K15t_