Mobile SEO Guide
Core Web Vitals Thresholds
LCP
Largest Contentful Paint
≤ 2.5s ✓
2.5–4s ⚠
> 4s ✗
INP
Interaction to Next Paint
≤ 200ms ✓
200–500ms ⚠
> 500ms ✗
CLS
Cumulative Layout Shift
≤ 0.1 ✓
0.1–0.25 ⚠
> 0.25 ✗
Mobile-First Indexing Checklist
| Requirement | How to Verify |
|---|---|
| Responsive design (same URL for all devices) | Resize browser window |
| Viewport meta tag set correctly | <meta name="viewport" content="width=device-width,initial-scale=1"> |
| Same content on mobile and desktop | Google Search Console mobile test |
| Touch targets ≥ 48×48px | Chrome DevTools |
| Font size ≥ 16px base | Inspect CSS |
| No intrusive interstitials | Manual mobile check |
| Structured data on mobile version | Rich Results Test tool |
Page Speed Quick Wins
- ☐ Enable text compression (Gzip/Brotli)
- ☐ Set proper Cache-Control headers
- ☐ Preload critical fonts and LCP image
- ☐ Defer non-critical JavaScript
- ☐ Serve images in WebP/AVIF format
- ☐ Use a CDN for static assets