Metrics per run

https://en.wikipedia.org/wiki/ChatGPT

Tested 2025-04-05 20:52:16 using Firefox 136.0 (runtime settings).

Side by side

Metric12345MedianMeanstddevrsd
Google Web Vitals
Time to First Byte 513 ms 519 ms 511 ms 587 ms 514 ms514 ms529 ms29 ms5.53 %
First Contentful Paint 1.084 s 1.084 s 1.084 s 1.152 s 1.050 s1.084 s1.091 s33 ms3.05 %
Largest Contentful Paint 1.594 s 1.738 s 1.103 s 1.187 s 1.086 s1.187 s1.342 s271 ms20.19 %
Interaction to Next Paint 179.3 ms NaN s 191.42 ms NaN s 185.18 ms185 ms185 ms5 ms2.67 %
Timing metrics
First Paint 1.090 s 1.086 s 1.089 s 1.161 s 1.066 s1.089 s1.098 s32 ms2.96 %
First Contentful Paint 1.084 s 1.084 s 1.084 s 1.152 s 1.050 s1.084 s1.091 s33 ms3.05 %
Largest Contentful Paint 1.594 s 1.738 s 1.103 s 1.187 s 1.086 s1.187 s1.342 s271 ms20.19 %
Load Event End 2.225 s 2.160 s 2.125 s 2.203 s 2.174 s2.174 s2.177 s35 ms1.59 %
Server Response Time 194 ms 193 ms 193 ms 195 ms 194 ms194 ms194 ms1 ms0.39 %
TTFB 513 ms 519 ms 511 ms 587 ms 514 ms514 ms529 ms29 ms5.53 %
Page Load Time 2.224 s 2.160 s 2.124 s 2.202 s 2.174 s2.174 s2.177 s34 ms1.58 %
First Visual Change 1.166 s 1.133 s 1.166 s 1.200 s 1.133 s1.166 s1.160 s25 ms2.16 %
Last Visual Change 3.000 s 2.966 s 3.000 s 3.000 s 2.900 s3.000 s2.973 s39 ms1.31 %
Speed Index 1.190 s 1.159 s 1.190 s 1.224 s 1.158 s1.190 s1.184 s24 ms2.06 %
Visual Readiness 1.834 s 1.833 s 1.834 s 1.800 s 1.767 s1.833 s1.814 s27 ms1.47 %
Visual Complete 95 1.166 s 1.133 s 1.166 s 1.200 s 1.133 s1.166 s1.160 s25 ms2.16 %
Visual Complete 99 1.800 s 1.833 s 1.800 s 1.866 s 1.866 s1.833 s1.833 s30 ms1.61 %
CPU metrics
Browser metrics
CPU benchmark score 51 ms 52 ms 51 ms 51 ms 51 ms51 ms51 ms0 ms0.78 %
Page metrics
DOM elements 8786 8786 8786 8786 87868786878600.00 %
Document height 35974 35974 35974 35974 35974359743597400.00 %
Total Requests 56 56 56 56 56565600.00 %
HTML Requests 1 1 1 1 11100.00 %
JavaScript Requests 7 7 7 7 77700.00 %
CSS Requests 2 2 2 2 22200.00 %
Font Requests 0 0 0 0 00000.00 %
HTTP Errors 0 0 0 0 0000N/A
Total Transfer Size 727.9 KB 735.7 KB 735.7 KB 735.7 KB 735.7 KB735.7 KB734.1 KB3.1 KB0.43 %
HTML Transfer Size 137.1 KB 137.1 KB 137.1 KB 137.1 KB 137.1 KB137.1 KB137.1 KB0 b0.00 %
JavaScript Transfer Size 283.7 KB 283.7 KB 283.7 KB 283.7 KB 283.7 KB283.7 KB283.7 KB0 b0.00 %
CSS Transfer Size 25.5 KB 25.5 KB 25.5 KB 25.5 KB 25.5 KB25.5 KB25.5 KB0 b0.00 %
Font Transfer Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
Favicon Transfer Size 1.9 KB 1.9 KB 1.9 KB 1.9 KB 1.9 KB1.9 KB1.9 KB0 b0.00 %
SVG Transfer Size 32.1 KB 32.1 KB 32.1 KB 32.1 KB 32.1 KB32.1 KB32.1 KB0 b0.00 %
Total Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
HTML Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
JavaScript Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
CSS Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
Image Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
Font Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
Favicon Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
SVG Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
Third Party metrics
First Party metrics
First Party Requests 56 56 56 56 56565600.00 %
First Party Total Transfer Size 727.9 KB 735.7 KB 735.7 KB 735.7 KB 735.7 KB735.7 KB734.1 KB3.1 KB0.43 %
First Party Total Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %