browser_trace
Site Speed Test
Enter a public URL to capture a real Chromium load, visual progress, request waterfall, blocking assets, and practical performance recommendations.
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Score
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Load
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Requests
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Bytes
Score Model
The score is a custom lab score out of 100 from this Chromium run. It starts at 100 and subtracts for high document TTFB, render-blocking requests, large assets, high request count, failed requests, slow LCP, layout shift, and main-thread blocking. It is not a Lighthouse score or field data.
FCP
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LCP
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CLS
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TBT
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Loading Filmstrip
Loading GIF
Initial HTML
Host Breakdown
Blocking Requests
Recommendations
Request Waterfall
| # | Type | Status | URL | Size | Time | Actions | Timeline |
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