With the Developer Tools window visible, click the menu icon (the three vertical dots in the top right corner) and click Settings. Chrome Version 86 the setting is on the same place but named differently, so: Settings -> Preferences -> Global -> Auto-open DevTools for popups .
Read moreWhere can I find TTFB?
Additional TTFB check methods (using a web browser)
Read moreWhat is waiting TTFB in Chrome?
More clearly TTFB is also called “waiting” by Google: Time spent waiting for the initial response , also known as the Time To First Byte. This time captures the latency of a round trip to the server in addition to the time spent waiting for the server to deliver the response.
Read moreHow do I find TTFB in Chrome?
How to Measure Your TTFB
Read moreWhat is XHR in network in Chrome?
XHR is referred to “XmlHttpRequest” and it allows to make HTTP request in Javascript .
Read moreHow do I change XHR in Chrome?
Chrome :
Read moreHow do I trace a network on Google Chrome?
Capturing the network trace file on Google Chrome From the Chrome menu bar, select View > Developer > Developer Tools . From the panel that opens, select the Network tab. Look for a round record button in the upper-left corner of the tab, and make sure it is red. If it is grey, click it once to start recording.
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