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h:har [2018/08/10 18:16] (current)
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 +# HAR File
  
 +The HTTP Archive format - HAR - is a JSON-formatted archive file format for logging of a web browser'​s interaction with a site. The common extension for these files is .har.
 +
 +Typically data about timings is stored and can be used to generate a [waterfall](../​w/​waterfall) graph:
 +
 +* Time to fetch DNS information
 +* Time for each object request
 +* Time to connect to server
 +* Time to transfer assets from the server to the browser of each object
 +
 +HAR files can be generated by most browsers.