The HTTP archive format, or HAR, is a JSON-formatted archive file format for logging a browser’s interaction with a site. The extension for this kind of file is .har.
To export a .har file
Step 1
Right-click anywhere in PageProf and select Inspect.
Step 2
In the developer tools, click Network – ensure Preserve Log is ticked, and you are recording (the red dot on the left hand side is on).
Step 3
Refresh your PageProof screen, and perform the action again that you wish to report to the PageProof team.
You should see the developer tools window registering the logs. Right-click on the logs and select Save all as HAR with content.