ResourcesSimple mode
Page Weight
Measures the total downloaded weight of the page and breaks it down by resource type, helping identify which assets consume the most bytes.
Why it matters
Heavy pages are slower to download, parse, and render, especially on mobile networks. Page weight often reveals whether JavaScript bundles, images, fonts, or third-party requests are dominating the experience.
Where to run it
Available automatically in Simple mode.
Can also be explored in more depth from the underlying WebPerf Snippets reference.
Open analyzerWhat you learn from this test
Which resource groups make the page heavy
Whether one or two assets dominate the transfer cost
Whether the page is likely too expensive for slower mobile conditions
Common fixes
Reduce JavaScript payloads and split bundles
Compress and resize images aggressively
Trim non-critical fonts and external assets
Set performance budgets for high-traffic templates