In Layman Terms On-page SEO Or On-site SEO includes the optimization and Improvements you carry out on your website to Rank well in search engines like Google for your keywords.
On-page SEO includes optimization or improvements done in website content and HTML code as well.
When You correctly Optimize these On-page Elements or Factors that impact Google Ranking you can see direct positive impact on Ranking and as a result growth in organic traffic.
Some of the Most Important On-page SEO factors
Textual Content
Title Tag.
Meta Description
URL
Heading Tags
Image Alt Text and Image Name
Formatting Tags Like Bold, Italics, UL, OL, etc.
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