Estimate total page weight, HTML size, and asset payloads to diagnose performance bloat.
Measures HTML and all referenced assets.
Raw document size before assets load.
Scripts, styles, images, fonts categorized by size.
Heavy pages hurt Core Web Vitals, increase bounce rates, and cost mobile users data. Google recommends under 1MB for key pages.
Under 1MB is ideal for mobile. Under 2MB is acceptable for desktop-heavy sites.
Unoptimized images, too many scripts, and large fonts are common culprits.