What are examples of on page optimization factors?

[seo.gops]

What are examples of on page optimization factors?

[tbsind]

I would like to share On page optimization factors are the

1) Keywords
2) Title Tags
3) Meta Description
4) Image Optimization
5) Site Speed
6) Responsive Design
7) URL Structure

[receivesmsotp]

Now a days on page optimization is playing very big role in online ranking. Some time before search engines rank website according to title and backlinks but now if you are using any keywords in title then body contents must be related to that keywords otherwise search engines will not rank website.