Performance Trend
Track performance scores and Core Web Vitals over time.
Avg Performance
82.4%
+5.2% vs previous period
Avg LCP
1.8s
-0.4s vs previous period
Avg CLS
0.08
+0.02 vs previous period
Avg FID
45ms
-12ms vs previous period
Performance Score Over Time
Daily average performance score for selected period
Performance Score
Grade History (Last 10 days)
Dec 7
C
Dec 8
C
Dec 9
B
Dec 10
B
Dec 11
B
Dec 12
A
Dec 13
A
Dec 14
B
Dec 15
A
Dec 16
A
Core Web Vitals
LCP (Largest Contentful Paint)
Good
1.8s
Target: < 2.5s
CLS (Cumulative Layout Shift)
Needs Work
0.08
Target: < 0.1
FID (First Input Delay)
Good
45ms
Target: < 100ms
Mobile vs Desktop Performance
Compare performance scores across devices
Mobile (avg: 78.2%)
Desktop (avg: 86.5%)
Performance Recommendations
Optimize images on product pages
Large images are causing slow LCP on mobile devices. Consider using WebP format and implementing lazy loading for below-the-fold images.
Estimated impact: +8-12% performance score
Reduce JavaScript bundle size
Main JavaScript bundle is 450KB. Consider code splitting and tree shaking to reduce initial load time and improve FID.
Estimated impact: +5-8% performance score
Add explicit width/height to images
Several images are missing explicit dimensions, causing layout shifts. Adding width and height attributes will improve CLS score.
Estimated impact: -0.03 CLS improvement