What is important factors in On page?

<title>……………</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<META http-equiv="Content-Type" Content="text/html; charset=iso-8859-1">
<META name="description" content=" …………….. " />
<META name="keywords" content="">
<META name="" content=" ">
<META name="abstract" content=" ">
<META name="classification" content=" ">
<META name="distribution" content="Global">
<META name="publisher" content="">
<META name="robots" content="index,follow">…
What is important factors in On page?

See original post by ashutoshksingh