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The HTTP Archive format or 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.

The specification for the HTTP Archive (HAR) format defines an archival format for HTTP transactions that can be used by a web browser to export detailed performance data about web pages it loads. The specification for this format is produced by the Web Performance Working Group<ref></ref> of the World Wide Web Consortium (W3C). The specification is in draft form and is a work in progress.<ref></ref>

.har sections
Intro   Support   References   External links   

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