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Which score is most reliable (and complete) to use when comparing different sites and pages to get a quick idea (e.g. between competitor websites without detailed analysis)?


I am asking because for the same page on the same site, the score is over 30 marks higher via Google Insights online, which leads me to believe that the official Chrome extension is more accurate (e.g. worse score).

Some of this has been addressed in detail before, but for the purposes of doing quick analysis — what accounts for the different PageSpeed scores?

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Could you provide the URL that is giving such a different score between the two tools? –  Tim Fountain Jul 5 '13 at 14:18
    
@TimFountain, this site is awarded 47 in the extension, and 73 online –  Baumr Jul 5 '13 at 14:53
    
For that URL I get 76 from the extension, 73 online. Might you be logged in to the site and seeing slightly different content to the tool? –  Tim Fountain Jul 5 '13 at 14:59
    
Nope, definitely not — got 60 in Firefox –  Baumr Jul 5 '13 at 15:16

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