SEO On-Page Tast Is Most important For search engine friendly

S.No	Task
1	Title and Meta Tags
2	Keyword Tags
3	H1,H2,H3 Tags
4	Sitemaps
5	Google Analytics code
6	Image optimization - Alt
7	W3C Validation
8	Install webmaster tools of google . Yahoo ., bing
9	Ensure the URLs of each page is seo friendly- url rewriting
10	Ror
11	Robots.txt
12	Editing of content to maintain perfect keyword density
13	Alexa Submission
14	Dmoz Submission
15	interlink all pages of website
16	submission of site to major search engine
17	submission of site to major search directories
18	Error 404
19	Integration of affliate marketing programme if required .
20	Making the whole site search engine friendly .
21	Hub pages submission