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

Tested 2026-09-20 11:00:06 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 showedpassesgood under 2.5 spoor over 4 s2.488 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 ms2.102 smedian
Speed Indexhow quickly content filled the screenpassesgood under 3.4 spoor over 5.8 s3.249 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 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
poorhttps://en.wikipedia.beta.wmcloud.org/wiki/Barack_Obama2.488 s0.1012.102 s3.249 s779.5 KB84→

How the median page rendered

Visual milestones
  • 2.152 sFirst Contentful Paint
  • 2.167 sFirst Visual Change
  • 2.488 sLargest Contentful Paint
  • 3.249 sSpeed Index
  • 5.967 sLast Visual Change
  • 6.270 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
  • Performance84
  • Best practice65
  • Privacy74
  • Overall78

CPU

Median across all pages
  • Long tasks12
  • Long task time2.804 s
  • Max Potential FID597 ms
Where the time went
  • Running JavaScript2.361 s
  • Parsing HTML & CSS1.003 s
  • Other browser work755 ms
  • Style & layout468 ms
  • Paint & composite143 ms
  • Parsing & compiling JavaScript27 ms
  • Garbage collection22 ms