above-the-fold render time on WPT

[jakeb]

At the Velocity Online Conference today, we announced the option to collect above-the-fold (AFT) render time on webpagetest.org (WPT). This is an option that runs in tandem with video capture to analyze screen shots to identify the time/frame at which browser window visible content is rendered.

To try this out for your web page, click the option on the Video tab at the bottom of Advanced Settings.

Download the presentation slides for background, heuristics, and WPT features for AFT.

Thanks to Zoe Abrams (algorithm design) and Pat Meenan (WPT integration).

Jake Brutlag