The onpage optimization includes following important factors:
Crawlable content
Title Tags
Meta keyword tags
Meta description
Alt tags for images
Keyword Density
URL
h1/ h2 tags
Site Maps
Internal Linking
Crawlable content:
The Content on your webpage has to be crawlable. Search engines can not crawl media files like videos,audios,images etc.. & yes except google no other search engine can crawl flash pages.
Title tags:
Title tags are a [...]