Search Engine Ranking

For search engine ranking, every engine prefers a different amount of text on the page, a different overall page size, and of course, a different keyword density ratio. Google, for example, likes small page sizes, with the size ranging.
When the search engines come to your web page, they have a number of things that they are going to be looking for, and a number of things that they don't want to find on the page.
Some of the criteria that the search engine robots look for are: Text, text, text, and more text; Keyword rich text; Links and Link titles; a keyword density percentage; Large text sizes; Title tags; Alt tags; H1 Tags; Frames tag if using Frames
Some of the things that the search engine robots do not want to find on your page are: To little text; Keyword Stuffing; Heavy Java Script; Large File Sizes; Small Text Sizes; Frames
Each search engine puts a different amount of weight on each of these criteria, but general rules apply across the board.

Web Page Optimization