SEO should follow the internal and external order, so the internal diagnosis of the website is the first task we need to do. I have diagnosed many websites, some websites "look beautiful" in appearance. Actually, for SE, some pages of the website do not even have information to capture. We should avoid this kind of thing.
First view the title
The title is very important to a website (I have emphasized it N times). SE should first see the title information when crawling the page, the relationship between the title Writing, position, and keyword is a standard for determining whether the title is reasonable. I will briefly describe several principles:
The title of the introduction incorporates refined keywords.
For more information about Dmoz Title writing, see.
The title code should be as advanced as possible.
Important webpage elements
Some important elements of the website, such as homepage navigation and information Classification links, should be used as much as possible. SE cannot grasp the information of image files, so that some important keywords are lost.
Page layout
Page layout is also very important. If a page is relatively large (more than 80 kB), the layout should follow the "golden triangle" principle, that is, the layout is first up, down, first left and right, this allows the SE to capture important information as much as possible.
Website quality
The quality of a website is an important criterion for the weight of SE, so building a high-quality website is also one of SEO's tasks. The quality of a website measured by SE may be reflected in the following aspects:
The content is original and widely referenced and reproduced.
The website update frequency is stable.
Few internal errors (dead links, etc)
The recommendation of some websites and the recognition of their peers (links)
