Hey Boris,
See results for my Wt based site kiset.org:
>
> http://developers.google.com/speed/pagespeed/insights/?url=webtoolkit.eu&tab=mobile
>
We have indeed not properly implemented a mobile friendly wt homepage;
something that is on our todo-list.
> 4. Eliminate render-blocking JavaScript and CSS in above-the-fold content.
>
This point is a bit trickier. The reason why Wt defers rendering until CSS
is loaded, is two-fold:
- layout managers in Wt will 'measure' page contents which is affected by
CSS
- the browser does not (reliably) emit a signal when a CSS stylesheet has
been loaded; which could be used by layout managers to re-measure.
These two problems together lead to a solution where Wt will defer all
rendering until CSS has been loaded. Clearly this isn't ideal for mobile
sites (which are likely not to use layout managers anyway), so I would
propose that this behavior can be changed with some API call.
Regards,
koen
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