How the page weight checker works
The checker fetches the page from a server, the way a browser would. It lists every script, stylesheet, image and font the HTML asks for and measures each file.
Sizes are what the server sends, usually compressed. Files that scripts add later, like chat widgets and some trackers, don't show up, so the real page can be heavier.
Weight is one part of speed. For what real visitors experience, check Core Web Vitals in PageSpeed Insights. Google's targets are Largest Contentful Paint under 2.5 seconds, Interaction to Next Paint under 200 milliseconds and Cumulative Layout Shift under 0.1.1
Questions people ask
What is page weight?
The total size of everything a page downloads before it's usable: the HTML, scripts, stylesheets, images and fonts.
What usually makes a page heavy?
Large images saved at full camera size, scripts from plugins and trackers, and too many font files. Images are usually the biggest share and the easiest to fix.
Why does my page load slowly even though it's light?
Speed also depends on the server, the order files load in and scripts that block the page. Check Core Web Vitals in PageSpeed Insights for the full picture.
Do you store the pages I check?
No. The checker fetches the page to measure it. The result is cached for up to an hour so repeat checks are fast, and nothing else is kept.