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

Tested 2026-07-27 23:42:14 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 s2.612 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 ms2.161 smedian
Speed Indexhow quickly content filled the screenpassesgood under 3.4 spoor over 5.8 s3.214 smedian
Page weightbytes shipped over the wirepassesgood under 1.5 MBpoor over 2.9 MB785.6 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_Obama2.612 s0.1012.161 s3.214 s785.6 KB83→

How the median page rendered

Visual milestones
  • 2.267 sFirst Visual Change
  • 2.284 sFirst Contentful Paint
  • 2.612 sLargest Contentful Paint
  • 3.214 sSpeed Index
  • 5.867 sLast Visual Change
  • 6.001 sFully Loaded

What the median page is made of

Bytes and requests by content type
Transfer785.6 KB
javascript361.2 KBhtml294.8 KBimage83.1 KBcss26.6 KBsvg18.1 KBjson1.8 KB
Requests32
svg15image7javascript5css2html1json1

Coach's notes

Median scores out of 100
  • Performance83
  • Best practice65
  • Privacy73
  • Overall77

CPU

Median across all pages
  • Long tasks14
  • Long task time2.910 s
  • Max Potential FID590 ms
Where the time went
  • Running JavaScript2.353 s
  • Parsing HTML & CSS1.038 s
  • Other browser work745 ms
  • Style & layout460 ms
  • Paint & composite153 ms
  • Garbage collection29 ms
  • Parsing & compiling JavaScript27 ms