Depends on what you mean by “loaded”. Most tools in this space, like WebPageTest or commercial tools, have both a “Load” event and a “Fully Loaded” event.
Loaded is the usually the DOM Complete or window.onload event. Fully Loaded is an algorithmic metric that is looking for a time window after the load event when there isn’t any network activity (usually 1.5 to 2 seconds depending on the tool)
Best advice is to just follow what the open source tools do. Same from other computed metrics like TBT or SpeedIndex. (I’m the CTO of a company in this space and that’s what we do)
Loaded is the usually the DOM Complete or window.onload event. Fully Loaded is an algorithmic metric that is looking for a time window after the load event when there isn’t any network activity (usually 1.5 to 2 seconds depending on the tool)
Best advice is to just follow what the open source tools do. Same from other computed metrics like TBT or SpeedIndex. (I’m the CTO of a company in this space and that’s what we do)
https://www.webpagetest.org/forums/showthread.php?tid=13487