Page Weight Analyzer

A useful estimate, not fake lab data

This scan uses server-side fetching and Content-Length where available. It does not execute the page in a browser and therefore does not claim to measure transferred bytes, caching behaviour, request prioritisation or a real network waterfall.

That limitation is useful rather than embarrassing: the tool is good at answering “what does this HTML depend on, which dependencies are third-party, and which declared assets are conspicuously large?” For Core Web Vitals and request sequencing, use browser-based field or lab data instead.