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  • A visual change occurred in the frame.
  • Largest Contentful Paint occurred in the frame.
  • A visual change and a Layout Shift occurred in the frame.
  • Largest Contentful Paint and a Layout Shift occurred in the frame.
Filmstrip Options
Thumbnail Size


Thumbnail Interval



Comparison Endpoint



Waterfall Opacity (adjust sliders to adjust the transparency of the given waterfall):