Google Image Search – How to Search for Images with Transparent Background

Disable new Google Images search style

add the string &sout=1 at the end of the search URL, eg. http://google.com/images?q=sunset&sout=1

OR

scroll to the end of the search results page and click the link called “Switch to Basic Version”

Hope this helps.

Google recently started indexing SVG files;

http://googlesystem.blogspot.com/2011/01/google-image-search-indexes-svg-files.html

It should be there as a 'filetype' option in the advanced images search;

http://www.google.com/advanced_image_search

This might also be useful;

Find SVG vector images with Google Search

Hope this helps.