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Using Fiddler2 instead of the online HAR viewer

by / Monday, 11 July 2011 / Published in Product News

When we introduced HAR files for performance measurements and analysis, we recommended using the online viewer at for visualization. However, for some reason the online viewer did not display any graphs lately. 

While the site’s owner fixed the issue impressingly quickly when we told him about it, there will be occasions where you may prefer an offline tool. This is where Fiddler2 may come in useful.

Open Fiddler2, select “File -> Import Session…”:

Select HTTP archive as the file format:

Select the HAR file you downloaded from your sensor:

Finally, mark the session on the left (ignoring some initial lines that contain “fiddlermarker”) and select “Timeline” on the right.

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