Metrics per run

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

Tested 2025-09-01 03:27:38 using Firefox 142.0 (runtime settings).

Side by side

Metric12345MedianMeanstddevrsd
Google Web Vitals
Time to First Byte 572 ms 596 ms 612 ms 614 ms 684 ms612 ms616 ms37 ms6.07 %
First Contentful Paint 1.389 s 1.118 s 1.355 s 1.440 s 1.321 s1.355 s1.325 s111 ms8.34 %
Largest Contentful Paint 3.018 s 2.849 s 2.745 s 2.881 s 2.882 s2.881 s2.875 s87 ms3.04 %
Timing metrics
First Paint 1.391 s 1.255 s 1.357 s 1.450 s 1.465 s1.391 s1.384 s75 ms5.44 %
First Contentful Paint 1.389 s 1.118 s 1.355 s 1.440 s 1.321 s1.355 s1.325 s111 ms8.34 %
Largest Contentful Paint 3.018 s 2.849 s 2.745 s 2.881 s 2.882 s2.881 s2.875 s87 ms3.04 %
Load Event End 3.232 s 2.946 s 2.750 s 2.947 s 2.203 s2.946 s2.816 s343 ms12.17 %
Server Response Time 203 ms 270 ms 186 ms 277 ms 184 ms203 ms224 ms41 ms18.31 %
TTFB 572 ms 596 ms 612 ms 614 ms 684 ms612 ms616 ms37 ms6.07 %
Page Load Time 3.232 s 2.946 s 2.750 s 2.947 s 2.202 s2.946 s2.815 s343 ms12.19 %
First Visual Change 1.433 s 1.333 s 1.400 s 1.500 s 1.500 s1.433 s1.433 s63 ms4.42 %
Last Visual Change 3.967 s 3.800 s 3.833 s 4.033 s 3.867 s3.867 s3.900 s87 ms2.23 %
Speed Index 1.612 s 1.519 s 1.575 s 1.657 s 1.666 s1.612 s1.606 s54 ms3.38 %
Visual Readiness 2.534 s 2.467 s 2.433 s 2.533 s 2.367 s2.467 s2.467 s63 ms2.56 %
Visual Complete 95 3.000 s 2.866 s 2.767 s 2.900 s 2.867 s2.867 s2.880 s75 ms2.60 %
Visual Complete 99 3.033 s 2.866 s 2.767 s 2.900 s 2.867 s2.867 s2.887 s86 ms2.97 %
CPU metrics
Browser metrics
CPU benchmark score 51 ms 51 ms 53 ms 52 ms 51 ms51 ms52 ms1 ms1.55 %
Page metrics
DOM elements 8355 8355 8355 8355 83558355835500.00 %
Document height 32618 32618 32618 32618 32618326183261800.00 %
Total Requests 62 62 62 62 62626200.00 %
HTML Requests 1 1 1 1 11100.00 %
JavaScript Requests 8 8 8 8 88800.00 %
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 970.7 KB 970.7 KB 970.7 KB 970.7 KB 970.7 KB970.7 KB970.7 KB2 B0.00 %
HTML Transfer Size 125.4 KB 125.4 KB 125.4 KB 125.4 KB 125.4 KB125.4 KB125.4 KB0 b0.00 %
JavaScript Transfer Size 376.2 KB 376.2 KB 376.2 KB 376.2 KB 376.2 KB376.2 KB376.2 KB1 B0.00 %
CSS Transfer Size 26.6 KB 26.6 KB 26.6 KB 26.6 KB 26.6 KB26.6 KB26.6 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 39.7 KB 39.7 KB 39.7 KB 39.7 KB 39.7 KB39.7 KB39.7 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 62 62 62 62 62626200.00 %
First Party Total Transfer Size 970.7 KB 970.7 KB 970.7 KB 970.7 KB 970.7 KB970.7 KB970.7 KB2 B0.00 %
First Party Total Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %