What's the most important on-page SEO element?

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

Your title tag is the most important on-page SEO factor. In general, the closer the keyword is to the beginning of the title tag, the more weight it has with search engines.

Hi Friends,
On-Page SEO refers to how good your website's content is presented to search engines. It involves ensuring whether a particular webpage is structured in a manner so that it gets found by the search engines for given keywords and key phrases. It helps in getting good search engine ranking and also increases overall readability of the site.

• Age of the page
• 
  Length of content
• 
  URL Length
• 
  Linking out to authority sites
• 
  Relevance to search query

Google Webmaster
Bing Webmaster
Robots.txt
Google Analytics
No Follow External Links
XML Sitemap
HTML Sitemap
Images Underscore
Social Media Links
Canonical Issue
Navigation
Broken Links
Site Loading Speed (Desktop)
Site Loading Speed (Mobile)
Image Expires Tag
H1 Tags
Imges Alt Tags
Header Image Expire tag

I have some strategy to follow for On-page SEO for your website once you follow this main factors
Title tags
Meta description
Header tags
Canonical tags
Image alt text
Site loading test
Mobile optimization
Sitemap xml
Robots.txt

Your title tag is the most important on-page SEO factor. In general, the closer the keyword is to the beginning of the title tag, the more weight it has with search engines

Your title tag is the most important on-page SEO factor. In general, the closer the keyword is to the beginning of the title tag, the more weight it has with search engines.