Applies to: ShasTech SEO Synergy Free 6.2.2+.
What the scanner does
Performance SEO examines the rendered same-site page for readiness signals related to LCP, CLS and INP, image loading, dimensions, blocking CSS/JS and third-party scripts.
Readiness vs field data
The scanner provides readiness heuristics; it is not a replacement for Chrome UX Report or real-user field measurements.
Recommended workflow
- Scan a representative page.
- Start with high-priority image/layout issues.
- Review blocking assets and synchronous scripts.
- Re-test after theme/cache changes.
- Confirm real-world results with appropriate field/lab tools.
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