1 page analysed for https://en.wikipedia.beta.wmcl...

Tested 2026-08-24 20:35:09 using Chrome (runtime settings)

Pages passing every check
0 / 1
The page needs work; the dots show where.https://en.wikipedia.beta.wmcloud.org/wiki/Barack_Obama
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Largest Contentful Paintwhen the main content showedpassesgood under 2.5 spoor over 4 s2.176 smedian
Cumulative Layout Shifthow much the layout jumpedpassesgood under 0.1poor over 0.250.038median
Total Blocking Timehow long the main thread was blockedpassesgood under 200 mspoor over 600 ms85 msmedian
Speed Indexhow quickly content filled the screenpassesgood under 3.4 spoor over 5.8 s2.301 smedian
Page weightbytes shipped over the wirepassesgood under 1.5 MBpoor over 2.9 MB844.5 KBmedian
Coach performance scorehow well pages follow performance adviceflaggedpoor under 70good over 9084median · worst 81
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.beta.wmcloud.org/wiki/Barack_Obama2.176 s0.03885 ms2.301 s844.5 KB81→

How the median page rendered

Visual milestones
  • 2.060 sFirst Contentful Paint
  • 2.066 sFirst Visual Change
  • 2.176 sLargest Contentful Paint
  • 2.301 sSpeed Index
  • 3.433 sLast Visual Change
  • 4.657 sFully Loaded

What the median page is made of

Bytes and requests by content type
Transfer844.5 KB
html364.3 KBjavascript356.6 KBimage69.2 KBcss31.0 KBsvg23.4 KB
Requests40
svg18image11javascript7css2html1

Coach's notes

Median scores out of 100
  • Performance84
  • Best practice68
  • Privacy71
  • Overall77

CPU

Median across all pages
  • Long tasks3
  • Long task time235 ms
  • Max Potential FID102 ms
Where the time went
  • Style & layout587 ms
  • Running JavaScript313 ms
  • Other browser work192 ms
  • Parsing HTML & CSS177 ms
  • Paint & composite115 ms
  • Garbage collection7 ms
  • Parsing & compiling JavaScript4 ms