what is on-page in seo?

[Raj]

please tell me about on-page in seo? and How to importance to our site?

My website is: http://www.greenbanana.co/

[Katie]

on-page optimization refers to factors that have an effect on your Web site or Web page listing in natural search results. These factors are controlled by you or by coding on your page.

[Gina]

On-page optimization : On-page optimization means making small modifications
in your website which have a noticeable impact on your site's user experience and performance in organic search results.

On-page optimization includes :
Page Load factor
Meta Description tag
ALT tags
H1 tags
URL structure
Internal linking strategy
Content
Keyword density
Site maps, both XML and HTML
RSS Feed
Usability and accessibility

Avoid common on-page SEO mistakes such as:

Duplicate content
URL variants of the same pages
Off-site images and content on-site
Duplicate title tags

Avoid spammy SEO tactics such as:
Hidden text
Hidden links
Keyword repetition
Doorway pages
Mirror pages
Cloaking

[george]

On page optimization is like putting h3 tags and stuff, not rally important because if you build a site that is engaging people will come no matter what

[Abraham]

On Page SEO is Analyzing and Adding our Information on our website .