This search supports switching between three search types:

• semantic, in which results are based on how well they are described by your search query. For example, you could be as specific as "drawing of computer."
• url text, in which results are exclusively based on the presence of your search term in a gif's URL and filename.
• both, the default search type, which consults both an image's semantic meaning and its url text.

In addition, width and height parameters are supported. They only perform exact matches; for example, try searching for images with width 88 and height 31.