Metrics per run

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

Tested 2025-12-07 11:37:39 using Chrome 142.0.7444.59 (runtime settings).

Side by side

Metric1234567MedianMeanstddevrsd
Google Web Vitals
Time to First Byte 487 ms 503 ms 505 ms 487 ms 487 ms 488 ms 504 ms488 ms494 ms8 ms1.68 %
First Contentful Paint 1.064 s 1.088 s 1.084 s 1.044 s 1.060 s 1.044 s 1.068 s1.064 s1.065 s16 ms1.51 %
Largest Contentful Paint 1.064 s 1.088 s 1.084 s 1.044 s 1.060 s 1.044 s 1.068 s1.064 s1.065 s16 ms1.51 %
Interaction to Next Paint 560 ms 568 ms 560 ms 544 ms 552 ms 536 ms 552 ms552 ms553 ms10 ms1.80 %
Total Blocking Time 366 ms 345 ms 373 ms 396 ms 372 ms 363 ms 361 ms366 ms368 ms14 ms3.89 %
Cumulative Layout Shift 0.154 0.154 0.153 0.152 0.154 0.153 0.1530.1530.1530.0010.55 %
Timing metrics
First Paint 1.064 s 1.088 s 1.084 s 1.044 s 1.060 s 1.044 s 1.068 s1.064 s1.065 s16 ms1.51 %
First Contentful Paint 1.064 s 1.088 s 1.084 s 1.044 s 1.060 s 1.044 s 1.068 s1.064 s1.065 s16 ms1.51 %
Largest Contentful Paint 1.064 s 1.088 s 1.084 s 1.044 s 1.060 s 1.044 s 1.068 s1.064 s1.065 s16 ms1.51 %
Load Event End 2.066 s 1.953 s 2.033 s 2.044 s 1.961 s 1.954 s 1.979 s1.979 s1.999 s44 ms2.21 %
Server Response Time 415 ms 414 ms 414 ms 415 ms 412 ms 412 ms 413 ms414 ms414 ms1 ms0.28 %
TTFB 487 ms 503 ms 505 ms 487 ms 487 ms 488 ms 504 ms488 ms494 ms8 ms1.68 %
Page Load Time 2.066 s 1.953 s 2.033 s 2.044 s 1.961 s 1.954 s 1.979 s1.979 s1.999 s44 ms2.21 %
First Visual Change 1.066 s 1.066 s 1.066 s 1.033 s 1.033 s 1.033 s 1.033 s1.033 s1.047 s16 ms1.56 %
Last Visual Change 20.166 s 13.800 s 13.900 s 13.933 s 13.833 s 13.900 s 13.866 s13.900 s14.771 s2.203 s14.91 %
Speed Index 3.651 s 3.051 s 3.146 s 3.125 s 3.090 s 3.100 s 3.099 s3.100 s3.180 s194 ms6.10 %
Visual Readiness 19.100 s 12.734 s 12.834 s 12.900 s 12.800 s 12.867 s 12.833 s12.834 s13.724 s2.195 s16.00 %
Visual Complete 95 17.733 s 11.733 s 11.966 s 11.966 s 11.933 s 11.866 s 11.900 s11.933 s12.728 s2.045 s16.06 %
Visual Complete 99 17.733 s 12.733 s 13.866 s 13.900 s 13.800 s 13.733 s 12.866 s13.800 s14.090 s1.554 s11.03 %
CPU metrics
Total Blocking Time 366 ms 345 ms 373 ms 396 ms 372 ms 363 ms 361 ms366 ms368 ms14 ms3.89 %
Max Potential FID 280 ms 262 ms 268 ms 291 ms 278 ms 280 ms 270 ms278 ms276 ms9 ms3.23 %
Number of Long Tasks 6 5 6 5 5 5 55508.55 %
Total Duration of Long Tasks 882 ms 794 ms 876 ms 835 ms 823 ms 809 ms 807 ms823 ms832 ms32 ms3.83 %
Browser metrics
CPU benchmark score 33 ms 34 ms 37 ms 33 ms 33 ms 33 ms 36 ms33 ms34 ms2 ms4.55 %
Page metrics
Cumulative Layout Shift 0.154 0.154 0.153 0.152 0.154 0.153 0.1530.1530.1530.0010.55 %
DOM elements 9254 9253 9254 9254 9254 9254 92549254925400.00 %
Document height 31571 31571 31571 31571 31571 31571 31571315713157100.00 %
Total Requests 58 58 58 58 58 58 58585800.00 %
HTML Requests 1 1 1 1 1 1 11100.00 %
JavaScript Requests 9 9 9 9 9 9 99900.00 %
CSS Requests 2 2 2 2 2 2 22200.00 %
Font Requests 0 0 0 0 0 0 00000.00 %
HTTP Errors 0 0 0 0 0 0 0000N/A
Total Transfer Size 877.0 KB 877.0 KB 877.0 KB 877.1 KB 873.0 KB 873.0 KB 873.0 KB877.0 KB875.3 KB2.0 KB0.23 %
HTML Transfer Size 133.0 KB 133.0 KB 133.0 KB 133.0 KB 133.0 KB 133.0 KB 133.0 KB133.0 KB133.0 KB0 b0.00 %
JavaScript Transfer Size 404.1 KB 404.1 KB 404.1 KB 404.2 KB 404.2 KB 404.2 KB 404.2 KB404.2 KB404.2 KB26 B0.01 %
CSS Transfer Size 26.2 KB 26.2 KB 26.2 KB 26.2 KB 26.2 KB 26.2 KB 26.2 KB26.2 KB26.2 KB1 B0.00 %
Font Transfer Size 0 b 0 b 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
Favicon Transfer Size 1.8 KB 1.8 KB 1.8 KB 1.8 KB 1.8 KB 1.8 KB 1.8 KB1.8 KB1.8 KB0 b0.00 %
JSON Transfer Size 2.2 KB 2.2 KB 2.2 KB 2.2 KB 2.2 KB 2.2 KB 2.2 KB2.2 KB2.2 KB0 b0.00 %
Plain Transfer Size 611 B 611 B 611 B 611 B 611 B 611 B 611 B611 B611 B0 b0.00 %
SVG Transfer Size 30.0 KB 30.0 KB 30.0 KB 30.0 KB 30.0 KB 30.0 KB 30.0 KB30.0 KB30.0 KB0 b0.00 %
Total Content Size 2.7 MB 2.7 MB 2.7 MB 2.7 MB 2.7 MB 2.7 MB 2.7 MB2.7 MB2.7 MB2.0 KB0.07 %
HTML Content Size 749.8 KB 749.8 KB 749.8 KB 749.8 KB 749.8 KB 749.8 KB 749.8 KB749.8 KB749.8 KB0 b0.00 %
JavaScript Content Size 1.5 MB 1.5 MB 1.5 MB 1.5 MB 1.5 MB 1.5 MB 1.5 MB1.5 MB1.5 MB4 B0.00 %
CSS Content Size 186.5 KB 186.5 KB 186.5 KB 186.5 KB 186.5 KB 186.5 KB 186.5 KB186.5 KB186.5 KB0 b0.00 %
Image Content Size 255.9 KB 255.9 KB 255.9 KB 255.9 KB 251.8 KB 251.8 KB 251.8 KB255.9 KB254.1 KB2.0 KB0.80 %
Font Content Size 0 b 0 b 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
Favicon Content Size 2.7 KB 2.7 KB 2.7 KB 2.7 KB 2.7 KB 2.7 KB 2.7 KB2.7 KB2.7 KB0 b0.00 %
JSON Content Size 2.2 KB 2.2 KB 2.2 KB 2.2 KB 2.2 KB 2.2 KB 2.2 KB2.2 KB2.2 KB0 b0.00 %
Plain Content Size 0 b 0 b 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
SVG Content Size 23.6 KB 23.6 KB 23.6 KB 23.6 KB 23.6 KB 23.6 KB 23.6 KB23.6 KB23.6 KB0 b0.00 %
Third Party metrics
First Party metrics
First Party Requests 58 58 58 58 58 58 58585800.00 %
First Party Total Transfer Size 877.0 KB 877.0 KB 877.0 KB 877.1 KB 873.0 KB 873.0 KB 873.0 KB877.0 KB875.3 KB2.0 KB0.23 %
First Party Total Content Size 2.7 MB 2.7 MB 2.7 MB 2.7 MB 2.7 MB 2.7 MB 2.7 MB2.7 MB2.7 MB2.0 KB0.07 %