QUOTE(vinodkunwar @ May 8 2012, 01:38 PM)
How will optimize image our website? give me pass some useful information.......
I think in this situation you should use alt tags for your image optimization as Google bots doesn't see the decoration or images it only sees the content of the site only text and if your are able to turn your site's image to text using tags then it would also be counted for page ranking.