Which Important Factors Makes On Page Optimization Better ?

    Use an URL which can be "decoded" by a human
    Start your title with a keyword
    Use multimedia to add some "brightness"
    Use outgoing links
    "Stuff" the first 100 words of the page with keywords
    Put a H1 tag in your headline
    Optimize the images
    Insert index-words in your title
    Reduce the download time
    Offer your content in a form which is convenient for the users
    Make use of the social media buttons
    Post long content
    Improve the bounce rate figures
    Use LSI keywords

URL Optimization. This is one of most important on-page SEO ranking factors because it conveys to search engines what your webpage is about.
Title Tag Optimization.
H1 Tag Optimization.
Subheading (H2-H6) Optimization.
Meta Description Optimization.
Content Optimization.
Image Optimization.
Internal Link Optimization

1. URL Optimization
2. Title Tag Optimization
3. H1 Tag Optimization
4. Subheading (H2-H6) Optimization
5. Meta Description Optimization
6. Content Optimization
7. Image Optimization
8. Internal Link Optimization

Factor important for on page are
⦁   Create a Sitemap
⦁   Share Your New Website Link
⦁   Bookmark It
⦁   Create Offsite Content
⦁   Setup Your RSS with Feedburner
⦁   Submit to Blog Directories

On page non-technical things are:
Improve user experience
Ensure that readers coming from search engines spend a lot of time on your site.
Create good content
On-page technical things are:
Title
Heading Tags
Keyword Density
Meta Tags
Images
Word count per post
Internal linking
External linking
Write engaging content

On page seo refers to the process that is followed on the website itself. Some of the tasks involved are:

Keyword research
Meta tags and title
Meta description
Robots.txt file
Sitemap generation
Content development
Image optimization