Web Bloat Score Calculator
TestDome (via Maciej Cegłowski):
Page web bloat score (WebBS for short) is calculated as follows:
WebBS = TotalPageSize / PageImageSize
TotalPageSize is the size of all requests, and PageImageSize is the size of a full-page screenshot.
The larger the WebBS, the more bloated a web page is relative to its image representation. For example, Tim Berners-Lee’s homepage has a WebBS of 0.204, which makes it really efficient, while Amazon has score of ~20, making it bloated.
It’s a crude metric—for example, it downsamples retina images, thus penalizing pages that include them—but interesting nonetheless.
Update (2016-10-29): See also: Hacker News.