Run a live CrawlOut Speed Engine audit

CrawlOut launches a real headless browser and runs its own Speed Engine against your page — Core Web Vitals, page weight, and the specific opportunities and diagnostics behind the score.

94Performance

Core Web VitalsLCP · CLS · TBT

Mobile & Desktoptest both, compare

Real Speed Engine AuditA live headless browser run, not an estimate.

Mobile & DesktopTest both and compare side by side.

Core Web VitalsLCP, CLS and TBT, with pass/fail thresholds.

Actionable FixesEvery opportunity explains how to fix it.

Learn more

Understanding site speed

A few common questions about performance scoring and Core Web Vitals.