Size of my webplayer build is 50Mb. And there are a lot of textures at high resolation. I also use low poly models an characters. How can i fix it? The SVG files has less size in the Unity3D. if are there any methods or solutions to use the SVG files inside the Unity, please explain it to me.
Any help i will appriciate 
Only bitmap formats are supported, no vector formats, unless you implement an own loader, so no, not possible out of the box (cairo should have a .net version I think, given it does not use native code you could use it to load SVG files and render them into images at load time - at runtime you can not use SVG anyway without implementing a scaleform alike system yourself)
Maybe you can do something with this: http://www.unifycommunity.com/wiki/index.php?title=SVG
–Eric
Eric thanks a lot.But i did not use it for texturing buildings(this method for only gradient).