Web Page Download Size

Written by Wednesday, 10 February 2010
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I used to rely on http://analyze.websiteoptimization.com for analyzing under-performing web pages - and to heighten customer's awareness of the impact of file sizes and load times.

While the tool is great, I never actually took the time to see how well it did its job.

Here's my beef with it at this time:

  • It might not be smart enough in its CSS analysis - from what I understand, it will look for every image link in the CSS and count it - no matter if the image actually needs to be loaded.

I'd love to find a FireFox plugin that would use the browser's rendering engine to figure out what has been downloaded.

I tried to save to disk using the browser, but it does not always pick up the files linked by the CSS (both in IE and FireFox).

Anyone knows of good alternatives for this kind of analysis?

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8 comments

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  • Comment Link mobileguy33 Tuesday, 02 August 2011 posted by mobileguy33

    I agree with first comment, Yslow extension is your friend

  • Comment Link Voeding Monday, 14 February 2011 posted by Voeding

    Yslow is good but i prefer FireFox/FireBug for site development.

  • Comment Link mark Tuesday, 02 November 2010 posted by mark

    Firefox add ons rock.

  • Comment Link Eric Maziade Thursday, 11 February 2010 posted by Eric Maziade

    Thanks for the tip - I found YSlow, which is very nice... I also figured out that the Web Developer Toolbar had "Document Size" in its "Information" tools that does exactly what I needed.
    YSlow was very interesting for new insights on how to speed things up.
    Thanks!

  • Comment Link Wayne A. Ptaff Thursday, 11 February 2010 posted by Wayne A. Ptaff

    Maybe Yahoo's YSlow Firefox extension can float your boat.
    http://developer.yahoo.com/yslow/

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