On 3 Aug 2011, at 9:24 AM, FinanzNachrichten.de, Markus Meister wrote: > Dear Ian, > > Maybe it would be possible to use browser sniffing for the mobile devices?
We've explicitly chosen not to do browser sniffing. > > Concerning the CSS sprites file it was a hard decision for us which graphics > we give into the sprites file and which not. > Especially for around 100 country flags that we use on pages like this: > http://www.finanznachrichten.de/nachrichten-medien/uebersicht.htm > > As you can see in our sprites file, we have finally included around the > top-20 flags. > And all icons - except of the calendar icon that we only use in our advanced > search > http://www.finanznachrichten.de/suche/uebersicht.htm - are in the sprites > file. > > At the end we used Yahoo's Smush.it http://www.smushit.com/ysmush.it/ and > Google's Page Speed http://pagespeed.googlelabs.com/ to > optimize the size of the files (without losing quality). We would not be able to have other sites host our content. > > So, as a first step it would make sense to analyze the traffic and which > graphic files are loaded how often. Agreed. > I could imagine that it may make sense to have 1 general CSS sprites file + a > second one for specific parts of the website, e.g. for > http://validator.w3.org . > > I am sure that this effort (3-10 working days depending on the CMS) will lead > to a clearly visible increase of speed + reduction of > server load. Thanks again! Ian > > Best regards, > > FINANZNACHRICHTEN.DE > Markus Meister > > ------------------------------------------- > http://www.finanznachrichten.de > Alle News zu Aktien, Börse und Finanzen > ------------------------------------------- > DER SPEKULANT - Der Börsenbrief für clevere Investoren > http://www.derspekulant.ch > ------------------------------------------- > > > -----Ursprüngliche Nachricht----- > Von: Ian Jacobs [mailto:[email protected]] > Gesendet: Mittwoch, 3. August 2011 13:27 > An: FinanzNachrichten.de, Markus Meister > Cc: [email protected] > Betreff: Re: Making w3.org much faster > > > On 3 Aug 2011, at 2:48 AM, FinanzNachrichten.de, Markus Meister wrote: > >> Dear Ian, >> >> When I visit the homepage, there are a lot of (unnecessary) http-requests. >> >> Firebug currently shows me 35 requests of which 4 are tiny CSS files. >> It would make sense to have 1 big CSS file instead. This would save 3 >> requests. From my experience 1 request with 1 byte costs at >> least the same load time as additional 10 kB in an file (using ADSL - >> depending on the bandwidth it can even be worse). > > Hi Markus, > > Thank you for the comments. We have considered "one big css" but prefer to > keep them separate to better address the diversity of > mobile devices. > >> >> There are 28 graphic files. >> I am sure that it would be possible to put at least 3/4 of them into a CSS >> sprite file, e.g. the logo, the icons, etc. > > Yes, we could (and should) do that. > >> >> Here you can see what happens during loading of the homepage on the First >> View and a Repeated View: >> http://www.webpagetest.org/result/110803_1F_17GF4/ >> >> With the CSS files put together in 1 file and the often used graphics put >> together in 1 CSS sprite file, the number of > http-requests >> should be around 10 and the load time will be down from nearly 2 seconds to >> 1 second. > > Thanks for the detailed investigation! > >> >> In the Repeat View you can see many 304s as there is a caching error that >> should be fixed as well. >> This would then bring down the second visit to 1-3 http-requests and would >> make the page ultra-fast!! >> >> Further to that convenience for users, the servers would have less work as >> there are less http-requests which may lead to cost >> savings. > > I appreciate the help and expect we will devote some time to the CSS sprite > work (when we can prioritize it). > > Ian > >> >> Best regards, >> >> FINANZNACHRICHTEN.DE >> Markus Meister >> >> ------------------------------------------- >> http://www.finanznachrichten.de >> Alle News zu Aktien, Börse und Finanzen >> ------------------------------------------- >> DER SPEKULANT - Der Börsenbrief für clevere Investoren >> http://www.derspekulant.ch >> ------------------------------------------- >> >> >> > > -- > Ian Jacobs ([email protected]) http://www.w3.org/People/Jacobs/ > Tel: +1 718 260 9447 > > -- Ian Jacobs ([email protected]) http://www.w3.org/People/Jacobs/ Tel: +1 718 260 9447
