HAR (file format)

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 format is used, among other tools, by the HTTP Archive project to collect and analyze web performance data.

Support The HAR format is supported by various software, including: Charles Proxy Chromium Fiddler Firebug Firefox Google Chrome LoadRunner Microsoft Edge Postman Safari