Metrics per run

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

Tested 2025-07-12 03:38:12 using Firefox 140.0.1 (runtime settings).

Side by side

Metric12345MedianMeanstddevrsd
Google Web Vitals
Time to First Byte 586 ms 650 ms 499 ms 513 ms 674 ms586 ms584 ms70 ms12.03 %
First Contentful Paint 1.203 s 1.287 s 1.151 s 1.135 s 1.169 s1.169 s1.189 s54 ms4.54 %
Largest Contentful Paint 1.253 s 1.968 s 1.966 s 1.140 s 2.018 s1.966 s1.669 s388 ms23.24 %
Interaction to Next Paint 175.9 ms 174.54 ms 190.52 ms 125.9 ms NaN s175 ms167 ms24 ms14.63 %
Timing metrics
First Paint 1.216 s 1.293 s 1.157 s 1.140 s 1.295 s1.216 s1.220 s65 ms5.35 %
First Contentful Paint 1.203 s 1.287 s 1.151 s 1.135 s 1.169 s1.169 s1.189 s54 ms4.54 %
Largest Contentful Paint 1.253 s 1.968 s 1.966 s 1.140 s 2.018 s1.966 s1.669 s388 ms23.24 %
Load Event End 2.379 s 2.419 s 2.296 s 2.288 s 2.457 s2.379 s2.368 s67 ms2.82 %
Server Response Time 195 ms 195 ms 195 ms 194 ms 194 ms195 ms195 ms0 ms0.25 %
TTFB 586 ms 650 ms 499 ms 513 ms 674 ms586 ms584 ms70 ms12.03 %
Page Load Time 2.379 s 2.419 s 2.295 s 2.287 s 2.457 s2.379 s2.367 s67 ms2.84 %
First Visual Change 1.267 s 1.366 s 1.233 s 1.200 s 1.366 s1.267 s1.286 s68 ms5.31 %
Last Visual Change 3.400 s 3.500 s 3.333 s 3.433 s 3.500 s3.433 s3.433 s63 ms1.85 %
Speed Index 1.296 s 1.402 s 1.270 s 1.231 s 1.403 s1.296 s1.320 s70 ms5.31 %
Visual Readiness 2.133 s 2.134 s 2.100 s 2.233 s 2.134 s2.134 s2.147 s45 ms2.10 %
Visual Complete 95 1.267 s 1.366 s 1.233 s 1.200 s 1.366 s1.267 s1.286 s68 ms5.31 %
Visual Complete 99 2.133 s 2.266 s 2.133 s 2.100 s 2.266 s2.133 s2.180 s72 ms3.28 %
CPU metrics
Browser metrics
CPU benchmark score 52 ms 52 ms 52 ms 52 ms 54 ms52 ms52 ms1 ms1.53 %
Page metrics
DOM elements 9104 9104 9104 9104 91049104910400.00 %
Document height 35303 35303 35303 35303 35303353033530300.00 %
Total Requests 58 58 58 58 58585800.00 %
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 928.6 KB 931.3 KB 931.3 KB 931.3 KB 931.6 KB931.3 KB930.8 KB1.1 KB0.12 %
HTML Transfer Size 136.4 KB 136.4 KB 136.4 KB 136.4 KB 136.4 KB136.4 KB136.4 KB0 b0.00 %
JavaScript Transfer Size 284.7 KB 284.7 KB 284.7 KB 284.7 KB 284.7 KB284.7 KB284.7 KB0 b0.00 %
CSS Transfer Size 26.4 KB 26.4 KB 26.4 KB 26.4 KB 26.4 KB26.4 KB26.4 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 34.0 KB 34.0 KB 34.0 KB 34.0 KB 34.0 KB34.0 KB34.0 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 58 58 58 58 58585800.00 %
First Party Total Transfer Size 928.6 KB 931.3 KB 931.3 KB 931.3 KB 931.6 KB931.3 KB930.8 KB1.1 KB0.12 %
First Party Total Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %