1 page analysed for https://en.wikipedia.org/wiki/...

Tested 2026-07-28 00:37:13 using Chrome (runtime settings)

Pages passing every check
0 / 1
The page needs work; the dots show where.https://en.wikipedia.org/wiki/ChatGPT
Open the page report →
Largest Contentful Paintwhen the main content showedpassesgood under 2.5 spoor over 4 s1.196 smedian
Cumulative Layout Shifthow much the layout jumpedpassesgood under 0.1poor over 0.250.001median
Total Blocking Timehow long the main thread was blockedpassesgood under 200 mspoor over 600 ms7 msmedian
Speed Indexhow quickly content filled the screenpassesgood under 3.4 spoor over 5.8 s1.208 smedian
Page weightbytes shipped over the wirepassesgood under 1.5 MBpoor over 2.9 MB841.3 KBmedian
Coach performance scorehow well pages follow performance adviceflaggedpoor under 70good over 9084median
The dot on each track is your page; click it to open the page report.

Page by page

Worst first · median of the runs · click a page for its full report
VerdictPageLCPCLSTBTSpeed IndexWeightCoach
needs workhttps://en.wikipedia.org/wiki/ChatGPT1.196 s0.0017 ms1.208 s841.3 KB84→

How the median page rendered

Visual milestones
  • 1.196 sFirst Contentful Paint
  • 1.196 sLargest Contentful Paint
  • 1.200 sFirst Visual Change
  • 1.208 sSpeed Index
  • 1.700 sLast Visual Change
  • 6.483 sFully Loaded

What the median page is made of

Bytes and requests by content type
Transfer841.3 KB
javascript309.3 KBimage238.1 KBhtml181.2 KBsvg80.9 KBcss29.1 KBfavicon1.8 KBplain918 B
Requests58
svg23image22javascript7css2html1favicon1plain1

Coach's notes

Median scores out of 100
  • Performance84
  • Best practice75
  • Privacy80
  • Overall81

CPU

Median across all pages
  • Long tasks3
  • Long task time345 ms
  • Max Potential FID57 ms
Where the time went
  • Style & layout375 ms
  • Running JavaScript249 ms
  • Other browser work152 ms
  • Parsing HTML & CSS91 ms
  • Paint & composite61 ms
  • Garbage collection10 ms
  • Parsing & compiling JavaScript3 ms