Life, Arts and Sciences

SEOs widely agree that the signals that influence a page’s rankings include:^[11]

1. Keywords in the title tag.
2. Keywords in links pointing to the page.
3. Keywords appearing in visible text.
4. Link popularity.
5. (PageRank for Google) of the page.
6. Keywords in Heading Tag H1,H2 and H3 Tags in webpage.
7. Linking from one page to inner pages.
8. Placing punch line at the top of page
9. Text within the title tag
10. Domain name
11. URL directories and file names
12. HTML tags: headings, emphasized (<em>) and strongly emphasized (<strong>) text
13. Term frequency, both in the document and globally, often misunderstood and mistakenly referred to as Keyword density
14. Keyword proximity
15. Keyword adjacency
16. Keyword sequence
17. Alt attributes for images
18. Text within NOFRAMES tags
19. Web content development
20. Sitemaps

Refrence: wikipedia