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It even works for normal screens, because instead of displaying the image at 100% of its width you display it at 50% and let the browser scale it. The end result is pretty much the same, instead of serving a 100KB JPEG you're now serving a 60KB WebP.
I see that Google logo works that way, it's a 538x190 png that is displayed at 50% (269x95) on their front page.
So what's wrong with SVGs that people don't use those for dynamically sized icons?
You can't SVG-ise a photo without ending up with a raster. So for many things SVG is a good idea, but not for things that are very complex.
There are some pretty amazing complex SVGs, but at that point it gets cheaper to just put a raster, for instance (size parity only at 2700x1800): https://commons.wikimedia.org/wiki/Fileojikko2.3.svg
Last edited by GreatEmerald; 03-24-2014, 10:48 AM.
Reason: Turn off smilies
They've been applying their compression to static images as a way of testing it, but I think I might ask them about it as an image format.
I, too, I think that wrapping their prediction algorithms into an actual image format could provide some definitely interesting results.
(Probably even better then WebP, and in the range of what top-of-the-line wavelet compressors produce).