This tab shows a summary of network related data for the whole log or the currently selected items:

Elapsed Time

This is the time in seconds from the start of the first request in the summary to the end of the last item. This can be used to find the total time to download a page or set of pages.

Network Round Trips

This value indicates how many requests resulted in an HTTP request and response message being exchanged with a web server. Some entries do not cause a network round trip because either an error occurred (e.g. ERROR_INTERNET_NAME_NOT_RESOLVED) or because no network request was required (e.g. entries resulting in a (Cache) response).

Downloaded Data

This is the total amount of data that has been received from web server(s). It covers encoded response data and the available response-header sizes, but it is not a packet-capture total and does not guarantee inclusion of TLS or transport overhead.

Uploaded Data

The total amount of data that has been sent to web server(s). It covers request bodies and available or estimated request-header sizes, but it is not a packet-capture total and does not guarantee inclusion of TLS or transport overhead.

HTTP Compression Savings

This is the total number of bytes by which downloaded content was reduced in size by HTTP compression.

DNS Lookups

The total number of times that a network name like 'www.google.com' was converted to an IP address (e.g. 72.14.221.103)

TCP Connects

The number of TCP connections used by the selected HTTP/1.x and HTTP/2 requests. HTTP/3 uses QUIC rather than TCP and is not represented as a TCP connect. Reusing established connections avoids connection-setup delay.