Metrics per run

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

Tested 2026-03-28 01:19:10 using Firefox 148.0.2 (runtime settings).

Side by side

Metric12345MedianMeanstddevrsd
Google Web Vitals
Time to First Byte 426 ms 425 ms 411 ms 427 ms 426 ms426 ms423 ms6 ms1.43 %
First Contentful Paint 1.127 s 1.122 s 1.116 s 1.116 s 1.137 s1.122 s1.124 s8 ms0.70 %
Largest Contentful Paint 1.170 s 1.543 s 1.560 s 1.672 s 1.356 s1.543 s1.460 s177 ms12.13 %
Interaction to Next Paint 128 ms NaN s 192 ms NaN s 192 ms192 ms171 ms30 ms17.68 %
Timing metrics
First Paint 1.126 s 1.122 s 1.116 s 1.116 s 1.136 s1.122 s1.123 s7 ms0.66 %
First Contentful Paint 1.127 s 1.122 s 1.116 s 1.116 s 1.137 s1.122 s1.124 s8 ms0.70 %
Largest Contentful Paint 1.170 s 1.543 s 1.560 s 1.672 s 1.356 s1.543 s1.460 s177 ms12.13 %
Load Event End 2.097 s 1.628 s 1.610 s 2.065 s 1.635 s1.635 s1.807 s224 ms12.40 %
Server Response Time 105 ms 104 ms 104 ms 104 ms 104 ms104 ms104 ms0 ms0.38 %
TTFB 426 ms 425 ms 411 ms 427 ms 426 ms426 ms423 ms6 ms1.43 %
Page Load Time 2.097 s 1.628 s 1.610 s 2.064 s 1.635 s1.635 s1.807 s224 ms12.39 %
First Visual Change 1.166 s 1.166 s 1.166 s 1.166 s 1.200 s1.166 s1.173 s14 ms1.16 %
Last Visual Change 3.366 s 3.266 s 3.100 s 3.366 s 3.200 s3.266 s3.260 s102 ms3.12 %
Speed Index 1.208 s 1.210 s 1.207 s 1.205 s 1.239 s1.208 s1.214 s13 ms1.05 %
Visual Readiness 2.200 s 2.100 s 1.934 s 2.200 s 2.000 s2.100 s2.087 s106 ms5.10 %
Visual Complete 95 1.166 s 1.166 s 1.166 s 1.166 s 1.200 s1.166 s1.173 s14 ms1.16 %
Visual Complete 99 2.133 s 2.133 s 2.066 s 2.066 s 2.100 s2.100 s2.100 s30 ms1.43 %
CPU metrics
Browser metrics
CPU benchmark score 76 ms 77 ms 77 ms 77 ms 79 ms77 ms77 ms1 ms1.27 %
Page metrics
DOM elements 8246 8246 8247 8246 82468246824600.00 %
Document height 30081 30081 30081 30081 30081300813008100.00 %
Total Requests 54 54 54 54 54545400.00 %
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 794.3 KB 794.3 KB 764.7 KB 764.7 KB 764.7 KB764.7 KB776.5 KB14.5 KB1.86 %
HTML Transfer Size 127.1 KB 127.1 KB 127.1 KB 127.1 KB 127.1 KB127.1 KB127.1 KB0 b0.00 %
JavaScript Transfer Size 310.7 KB 310.7 KB 310.7 KB 310.7 KB 310.7 KB310.7 KB310.7 KB1 B0.00 %
CSS Transfer Size 27.2 KB 27.2 KB 27.2 KB 27.2 KB 27.2 KB27.2 KB27.2 KB0 b0.00 %
Font Transfer Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
Favicon Transfer Size 2.0 KB 2.0 KB 2.0 KB 2.0 KB 2.0 KB2.0 KB2.0 KB0 b0.00 %
Plain Transfer Size 973 B 973 B 973 B 973 B 973 B973 B973 B0 b0.00 %
SVG Transfer Size 81.7 KB 81.7 KB 81.7 KB 81.7 KB 81.7 KB81.7 KB81.7 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 %
Plain 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 54 54 54 54 54545400.00 %
First Party Total Transfer Size 794.3 KB 794.3 KB 764.7 KB 764.7 KB 764.7 KB764.7 KB776.5 KB14.5 KB1.86 %
First Party Total Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %