WebPerformance Report
powered by WebPageTest
#WebPerf result for:
URL: https://www.w3.org/
From: Frankfurt, Germany - (Chrome) - Mobile
Date: 2025-04-18T14:55:54
Filmstrip - Video - Map - Opportunities - History - Frustration index (new)
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Optimization Scores
Grades for the most critical performance optimizations.
|
Perf Links
Great posts about web tech.
Core Web Vitals
UX Metrics for loading, visual stability, and interactivity.
|
LCP
|
CLS
|
TBT
|
| 2.469s | 0.005 | 0.242s |
|---|
|
LCP - CrUX
|
CLS - CrUX
|
INP - CrUX
|
TTFB - CrUX (new)
|
| 1.220s | 0.020 | 0.110s | 0.432s |
|---|
Lighthouse Scores
Diagnose performance issues - 3G Fast connection.
|
Performance
|
Accessibility
|
Best Practices
|
SEO
|
| 90 | 100 | 100 | 100 |
|---|
Performance Results
High-level metrics information about the page that was tested.
|
First Byte
|
Start Render
|
FCP
|
Speed Index
|
| 0.711s | 2.100s | 2.068s | 2.532s |
|---|
Document Complete
|
Time
|
Requests
|
Bytes In
|
| 3.038s | 23 | 320 KB |
|---|
Fully Loaded
|
Time
|
Requests
|
Bytes In
|
| 4.240s | 23 | 320 KB |
|---|
Content Breakdown
Website content breakdown by MIME type.
|
MIME Type
|
Requests
|
Bytes
|
| js | 4 | 25KB |
|---|---|---|
| css | 3 | 31KB |
| image | 12 | 225KB |
| font | 2 | 33KB |
| html | 1 | 9KB |
