Speed Index: Measuring Page Load Time a Different Way
Joyce Park stashed this in Code
Stashed in: Usability!, Software!
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Exciting new method and tool to measure perceived performance -- the number one factor in usability!
I like this because it reflects what a user sees:
It works by measuring how much of the above-the-fold content is visually complete over time until it is 100% complete (the part that is visible to the user when loaded initially).
10:48 PM Aug 17 2015