hey friends i need to know about the uses for ON-Page ...please share your ideas

You can do onpage for your website. It helps to promote your website and also improve your ranking in search engine.

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

On page seo is used for Crawling and indexing your website. Then you can see improvement in your SERP of your website.

Write SEO standard content
Good and unique content
Good content always comes with text (images, video ...)
Content useful to users
Do not stuff too many keywords
Absolutely no talking with coppy content

ON Page Tips are:
Optimize Page Title,
Optimize Meta Descriptions,
Meta Tags,
Alt Tags,
URL Sturcture,
Heading Tags H1, H2, etc.
Keyword Density,
Internal Linking.

On-page SEO is the practice of optimizing individual web pages in order to rank higher and earn more relevant traffic in search engines.

On page, seo is used for Crawling and indexing your website. It helps improvement in your SERP of your website.

Increase in Page speed
Time saving
Inexpensive way of marketing
Uniqueness

The main use of on page seo is that a website can obtain high rank on search engines and it also increases access to a website.