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The chart tab for a request shows the request, and any related requests, on a timeline chart. The timeline chart reveals when requests were started, when the response (download) started and when it ended. Furthermore if there are related requests then you can see where them in relation to each other.

Related requests will appear if you view an HTML page; the related requests will be the images, Javascript, CSS and other files that are loaded by the page.

The chart is useful for visualising parallel downloads, blocking and dependencies between resources.

Each bar on the chart is divided into three segments:

  • Request - the time spent sending (uploading) the request (dark blue)
  • Latency - the time spent waiting for network latency or processing time on the server (mid blue)
  • Response - the time spent receiving (downloading) the response (light blue)