FCP++ has Text Paint Timing and Image Paint Timing. Each of them only report either the largest text paint or image paint. This limits them to work for the image/text intense sites. In order to improve FCP++ as a whole, we need to combine largest text paint and Largest image paint to be one metric, largest content paint.
To define the largest content paint, we take the maximum size between the largest image size and the largest text size. If the max size is on image, the largest content is the largest image. vice versa. The largest content paint is the paint time of either the largest text paint or the largest image paint, depending on which size is larger.
Comment 1 by bugdroid1@chromium.org
, Jan 11