How do I improve the SEO ranking of a website?

Here are some On-Page SEO practices that you must follow:

Content - The most important ranking factor is your website’s content. Google now focuses more on qualitative and quantitative content. You need to write quality content on your website without doing keyword stuffing as google may consider it as spam.

With more quality links, your content can rank higher on Search Engine Result Pages

Keywords - Your first task is to find the niche related keywords to include in your content and then use these keywords to target your users.

Use LSI keywords to make your content searchable as they get semantically connected with your primary keywords. Google uses these keywords to show relevant results. It is based on the user search behavior and patterns.

Including LSI keywords is favorable according to search engines.

Few tools you can use to find Keywords:

Google Keyword Planner

RankWatch Keywords Suggestion

Meta Tags - Every website is categorized into different categories and for that you need to include Meta tags to define the niche of your website. It describes what the data is about.

Title Tag - It is the definition of a web page. It is same as headline of a document. These are displayed on search engine results pages as the headline for a given result on which user can click to visit the web page.

Best practice is to write a complete Title by keeping in consideration on what user will search instead of using particular keyword in title.

It is good practice if you can keep your titles under 60 characters as Google generally displays the first 50-60 characters of your title tag.
Meta description - It is 160 character summary of your webpage’s content. You can find it below the Title Tag. You can use this description to define the intent of the content.

Check out this SERP Ranking Blueprint to see how to rank your website.