HTTP response code errors
Site speed
Internal links pointing to the page
Correct rel=”canonical” Use
Absence of Broken Links
Perfect HTML Code
Valid CSS
Keyword in URL
Keyword in Page Title
Keywords in Internal Anchor Texts
Keyword in H1 Text
Keyword in Image Alt Text
Keyword Frequency (body text)
Keyword in Bold/Italic
Title tag optimization
meta description
header tag optimization
content
keywords density
image name and alt tag
html improvement
clean code
Bookmarks