Filter Images by Aspect Ratio and Size

Google's image search engine constantly adds new features that help you filter search results. Here's a list of some new options that aren't yet available in the user interface:

1. New ways to specify image sizes

The current interface lets you find images that are small, medium, large or extra large, but you can't find 2 MP photos. Now you can restrict results to 2 MP, 4 MP, 6 MP, 8 MP, 10 MP, 12 MP photos or larger photos:

http://images.google.com/images?q=panda&imgsz=2mp

http://images.google.com/images?q=panda&imgsz=4mp

http://images.google.com/images?q=moon&imgsz=8mp

http://images.google.com/images?q=egyptian+pyramids&imgsz=12mp

2. Aspect ratio filter

A feature that's already available in Microsoft's image search engine and it's useful to find photos that have certain shapes.

Squared photos:
http://images.google.com/images?q=panda&imgar=s

Nearly squared photos:
http://images.google.com/images?q=panda&imgar=ns

Tall photos:
http://images.google.com/images?q=tour+eiffel&imgar=t

Wide photos:
http://images.google.com/images?q=niagara&imgar=w

Panoramic photos:
http://images.google.com/images?q=niagara&imgar=xw

Wide photos related to Niagara