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

Tested 2026-09-20 11:47:40 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
Open the page report →
Largest Contentful Paintwhen the main content showedpassesgood under 2.5 spoor over 4 s1.912 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 ms89 msmedian
Speed Indexhow quickly content filled the screenpassesgood under 3.4 spoor over 5.8 s2.040 smedian
Page weightbytes shipped over the wirepassesgood under 1.5 MBpoor over 2.9 MB846.8 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.beta.wmcloud.org/wiki/Barack_Obama1.912 s0.03889 ms2.040 s846.8 KB84→

How the median page rendered

Visual milestones
  • 1.800 sFirst Visual Change
  • 1.804 sFirst Contentful Paint
  • 1.912 sLargest Contentful Paint
  • 2.040 sSpeed Index
  • 3.166 sLast Visual Change
  • 3.548 sFully Loaded

What the median page is made of

Bytes and requests by content type
Transfer846.8 KB
html364.2 KBjavascript359.5 KBimage70.6 KBcss30.5 KBsvg21.9 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 time246 ms
  • Max Potential FID111 ms
Where the time went
  • Style & layout565 ms
  • Running JavaScript312 ms
  • Other browser work200 ms
  • Parsing HTML & CSS177 ms
  • Paint & composite118 ms
  • Garbage collection19 ms
  • Parsing & compiling JavaScript5 ms