Metrics per run

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

Tested 2026-04-29 19:01:13 using Firefox 148.0.2 (runtime settings).

Side by side

Metric12345MedianMeanstddevrsd
Google Web Vitals
Time to First Byte 426 ms 427 ms 530 ms 526 ms 428 ms428 ms467 ms49 ms10.59 %
First Contentful Paint 1.001 s 1.038 s 1.216 s 1.209 s 1.111 s1.111 s1.115 s87 ms7.82 %
Largest Contentful Paint 1.510 s 1.102 s 1.610 s 1.713 s 1.610 s1.610 s1.509 s213 ms14.14 %
Timing metrics
First Paint 1.000 s 1.038 s 1.216 s 1.209 s 1.110 s1.110 s1.115 s87 ms7.84 %
First Contentful Paint 1.001 s 1.038 s 1.216 s 1.209 s 1.111 s1.111 s1.115 s87 ms7.82 %
Largest Contentful Paint 1.510 s 1.102 s 1.610 s 1.713 s 1.610 s1.610 s1.509 s213 ms14.14 %
Load Event End 1.926 s 1.597 s 2.224 s 2.180 s 2.086 s2.086 s2.003 s227 ms11.34 %
Server Response Time 104 ms 104 ms 104 ms 104 ms 104 ms104 ms104 ms0 ms0.00 %
TTFB 426 ms 427 ms 530 ms 526 ms 428 ms428 ms467 ms49 ms10.59 %
Page Load Time 1.926 s 1.597 s 2.223 s 2.179 s 2.086 s2.086 s2.002 s227 ms11.32 %
First Visual Change 1.066 s 1.100 s 1.233 s 1.266 s 1.133 s1.133 s1.160 s77 ms6.65 %
Last Visual Change 3.200 s 3.066 s 3.367 s 3.200 s 3.267 s3.200 s3.220 s98 ms3.05 %
Speed Index 1.101 s 1.128 s 1.267 s 1.299 s 1.169 s1.169 s1.193 s77 ms6.49 %
Visual Readiness 2.134 s 1.966 s 2.134 s 1.934 s 2.134 s2.134 s2.060 s91 ms4.40 %
Visual Complete 95 1.066 s 1.100 s 1.233 s 1.266 s 1.133 s1.133 s1.160 s77 ms6.65 %
Visual Complete 99 1.933 s 2.033 s 2.100 s 2.200 s 2.100 s2.100 s2.073 s88 ms4.25 %
CPU metrics
Browser metrics
CPU benchmark score 76 ms 76 ms 78 ms 79 ms 77 ms77 ms77 ms1 ms1.51 %
Page metrics
DOM elements 8398 8398 8398 8398 83988398839800.00 %
Document height 29088 29088 29088 29088 29088290882908800.00 %
Total Requests 59 59 59 59 59595900.00 %
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 792.5 KB 792.5 KB 792.5 KB 792.5 KB 792.5 KB792.5 KB792.5 KB1 B0.00 %
HTML Transfer Size 126.2 KB 126.2 KB 126.2 KB 126.2 KB 126.2 KB126.2 KB126.2 KB0 b0.00 %
JavaScript Transfer Size 307.8 KB 307.8 KB 307.8 KB 307.8 KB 307.8 KB307.8 KB307.8 KB1 B0.00 %
CSS Transfer Size 27.0 KB 27.0 KB 27.0 KB 27.0 KB 27.0 KB27.0 KB27.0 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 %
SVG Transfer Size 82.7 KB 82.7 KB 82.7 KB 82.7 KB 82.7 KB82.7 KB82.7 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 %
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 59 59 59 59 59595900.00 %
First Party Total Transfer Size 792.5 KB 792.5 KB 792.5 KB 792.5 KB 792.5 KB792.5 KB792.5 KB1 B0.00 %
First Party Total Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %