In order to calculate cost, the tool has to have some sort of optimal baseline to measure against. First, I want to address how the test calculates “cost”. Measure Overall PerformanceĪt the very top of these results, you’ll find the two most important pieces of information in the whole report: a letter grade, which attempts to capture all of the page’s good and bad decisions and reduce them down to a single simple metric, and an image weight comparison which shows you, quantitatively, the cost of all of those decisions. Tests take a minute or two to run and return a page full of results. We’ll start by giving it a URL - say, nytimes.photos - and pressing “Analyze.” Let’s start by looking at what Website Speed Test specifically does. Better yet, it’s built on top of, and integrated in, Pat Meenan’s WebPagetest. Interested? Read on!Įnter Website Speed Test, a free and drop-dead-simple tool that leverages our (Cloudinary’s) image smarts to let you measure, diagnose and (crucially) communicate about the image performance of any website. The first and most important thing you can do to improve the performance of your website’s images is figure out how to measure them.Įnter Website Speed Test, a free and drop-dead-simple tool that leverages our (Cloudinary’s) image smarts to let you measure, diagnose and (crucially) communicate about the image performance of any website.

It is hard to overstate the effect that images have on the average web page’s performance faster websites have broader reach and a higher impact.

Web developers spend their days writing hypertext, but, byte for byte, most of the web is composed of images.

Web site analysis