Awesome! This will also make it easier to experiment with alternate delivery formats: WebP, direct SVG usage, etc that depend on knowing whether there's client-side support. I'll fire up some more research... :D
-- brion On Tue, Aug 23, 2016 at 2:20 PM, Jon Robson <[email protected]> wrote: > FYI after much experimentation, research and testing the mobile site has > been lazy loading images [1] since Thursday 18th August. This means if you > do not see an image you will not download it. We have taken care to ensure > users without JavaScript can still view images and that most users will > barely notice the difference. > > We are currently crunching the data this change has made and we plan to > write a blog post to reporting the results. > > In our experiments on Japanese Wikipedia we saw a drop in image bytes per > page view by 54% On the Japanese Japan article bytes shipped to users > dropped from 1.443 MB to 142 kB. > > This is pretty huge since bytes equate to money [3] and we expect this to > be significant on wikis where mobile data is more expensive. In a nutshell > Wikipedia mobile is cheaper. > > As I said blog post to follow once we have more information, but please > report any bugs you are seeing with the implementation (we have already > found a few thanks to our community of editors). > > ~Jon > > [1] https://www.mediawiki.org/wiki/Reading/Web/Projects/ > Performance/Lazy_loading_images > [2] https://www.mediawiki.org/wiki/Reading/Web/Lazy_loading_ > of_images_on_Japanese_Wikipedia > [3] https://whatdoesmysitecost.com/ > > > > _______________________________________________ > Mobile-l mailing list > [email protected] > https://lists.wikimedia.org/mailman/listinfo/mobile-l > >
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