What are the major things we have to concentrate on with On-Page SEO?

There are a few things to focus on when utilising On-Page SEO, but the most important factor of any page is its content.  If the content is original, engaging, and addresses the issue at hand well enough, it's much more likely to rank well than a page with average content and loads of SEO tricks.

That being said, once your content is up to scratch, here are some important factors to consider in terms of On-Page SEO.

Keyword

It's important that you target a specific keyword for each piece of content you create.  Longtail keywords are more likely to rank well these days, for example, "best SEO tricks for blogs" as opposed to "SEO". 

Your keyword should be implemented within the URL of the page, the page's title, and sporadically throughout the main body of the content.  You should also add your keyword to the alt descriptions of any images you insert.

URL optimisation

Your URL should enable search engines to value the page relevancy in terms of website hierarchy.  For example, an optimal URL could look something like http://www.YourWebsite.com/tips/best-SEO.

Responsive pages

Web pages should be optimised to all web browsers and mobile devices.  In addition to this, the URL of the page should be identical on each browser and device.

Social sharing ability

Another great SEO practice is to implement the option to share the post or page via social media websites.  This can be achieved easily with Wordpress plugins, for example.