Glossary · Delivery and rendering

CrUX

The Chrome User Experience Report, which publishes real-user performance for origins with enough Chrome traffic. Absence of data is a statement about traffic volume, never about speed.

Delivery and rendering

What arrives on the wire, and what only exists after something else runs.

payload ratio · render dependence · render dependence gap · edge cache pinning · TTFB · Core Web Vitals · field data · prompt injection · Hydration mismatch · Dynamic rendering · DOM depth · Edge transformation · 202 interstitial · rate limiting · bot management platform

← Core Web Vitals  ·  field data →

See it in the full glossary · 579 terms across 19 areas. Scan a site to see which of these apply to it.