The content of a page is what makes it worthy of a search result position. It is what the user came to see and is thus extremely important to the search engines. As such, it is important to create good content. So what is good content? From an SEO perspective, all good content has two attributes. Good content must supply a demand and must be linkable.

You need to add robots mate tags, robots.txt file and sitemap this also good factors for website on-page.

It seems you ave forgot some things... Like
1. robot.txt,
2. canonical tag,
3. keyword density in content,
4. Analytics,
5. internal links...

Quality Content
Keyword research
Title tag
Meta description
Sitemaps
URL Structure
Robots.txt
Image optimization
Internal linking
Headers tag
Update Content Regularly

The best on page factors are:-

1. Blog Post Title
2. Submission of XML Sitemap
3. Post Permalink Structure
4. Implementation of Google Analytics
5. Heading Tags
6. Keyword Density
7. Anchor Text Optimization
8. Meta Tags
9. Alt Tag Optimization
10. Addition of Images
11. Content Interlinking
12. Title Tag Optimization
13. Web page Specific Meta Tag
14. Linking out to External Websites
15. Write Engaging Content
16. Keyword Research and Evaluation.

Best On page factors are:
Title tag
Meta Description
Quality Content
Sitemap
URL Structure
Image optimization
Internal Linking
Keyword Density
Headers tag
Update Content Frequently

Sitemaps
Meta tags
Duplicate Content within
Url structure
Header tags
Image optimization are some of the important on page seo factors

Ror.xml
robots.txt
sitemap.xml
meta title & description
cross linking
Linking within pages

ON page task
1. Meta Tag Creation
2. Content Optimization
3. Internal Linking
4. Robots Text
5. Sitemap
____________

There are several on-page factors that affect search engine rankings. This include:
Content of Page
Title Tag
URL
Image alt text
An Ideally Optimized Web Page

On Page Optimization plays an important role in SEO.Some of the important on-page factors are meta tags,Image and URL Optimization,Content Optimization.For seo services.click here http://www.smartsocialbrand.com/ to find more information.

On page checklist consist
Meta title, Url optimization, image optimization, sitemap, header tags , broken link checking , w3c validation errors.

that was great information, thanks folks

Best On Page Factors:
1.Keyword analysis
2.Meta Data
3.Sitemap.xml
4.Sitemap.html
5.Robots.txt
6.Google Analytic
7.Google Webmaster

On page activities include
Meta Tags
Schema
Header Tags
404 Pages Customization
Image optimization
Cross Linking