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

Tested 2026-09-20 14:21:57 using Chrome (runtime settings)

Pages passing every check
0 / 1
The page is below the bar; the dots show where.https://en.wikipedia.beta.wmcloud.org/wiki/Barack_Obama
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Largest Contentful Paintwhen the main content showedflaggedgood under 2.5 spoor over 4 s2.668 smedian
Cumulative Layout Shifthow much the layout jumpedflaggedgood under 0.1poor over 0.250.101median
Total Blocking Timehow long the main thread was blockedflaggedgood under 200 mspoor over 600 ms2.136 smedian
Speed Indexhow quickly content filled the screenpassesgood under 3.4 spoor over 5.8 s3.313 smedian
Page weightbytes shipped over the wirepassesgood under 1.5 MBpoor over 2.9 MB779.5 KBmedian
Coach performance scorehow well pages follow performance adviceflaggedpoor under 70good over 9083median
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
poorhttps://en.wikipedia.beta.wmcloud.org/wiki/Barack_Obama2.668 s0.1012.136 s3.313 s779.5 KB83→

How the median page rendered

Visual milestones
  • 2.132 sFirst Contentful Paint
  • 2.133 sFirst Visual Change
  • 2.668 sLargest Contentful Paint
  • 3.313 sSpeed Index
  • 6.033 sLast Visual Change
  • 6.229 sFully Loaded

What the median page is made of

Bytes and requests by content type
Transfer779.5 KB
javascript358.7 KBhtml294.7 KBimage78.6 KBcss28.1 KBsvg17.8 KBjson1.6 KB
Requests31
svg15image6javascript5css2html1json1

Coach's notes

Median scores out of 100
  • Performance83
  • Best practice65
  • Privacy74
  • Overall77

CPU

Median across all pages
  • Long tasks12
  • Long task time2.799 s
  • Max Potential FID565 ms
Where the time went
  • Running JavaScript2.310 s
  • Parsing HTML & CSS1.007 s
  • Other browser work739 ms
  • Style & layout467 ms
  • Paint & composite144 ms
  • Parsing & compiling JavaScript28 ms
  • Garbage collection26 ms