The Definitive Guide to Technical SEO in 2023

Technical SEO refers to the practice of optimising the technical aspects of a website in order to improve its ranking and visibility in search engines. This includes optimising the website’s code, structure, and server infrastructure, as well as ensuring that it is accessible and crawlable by search engines. Here is a guide on the main technical SEO factors to consider:

Site speed

Site speed is a critical factor for SEO, as it affects both the user experience and the ability of search engines to crawl and index the site. A slow-loading website will rank lower in the search results and may also result in a higher bounce rate. To improve site speed, you can optimise images, minify CSS and JavaScript, and use a content delivery network (CDN).


With the increasing use of mobile devices, it is important to ensure that your website is mobile-friendly. This means that it should be easy to navigate and read on a small screen, and that it should have a responsive design that adapts to different screen sizes. To check the mobile-friendliness of your website, you can use Google’s Mobile-Friendly Test.


Crawlability refers to the ability of search engines to crawl and index the pages on your website. If search engines can’t access and understand your pages, they won’t be able to include them in the search results. To improve crawlability, you can create a sitemap, use clean and descriptive URLs, and use robots.txt to block any pages that you don’t want to be indexed.


Ensuring that your website is secure is not only good for user trust but also for SEO. Google gives a ranking boost to secure websites, and it may flag insecure websites as unsafe in the search results. To improve the security of your website, you can use HTTPS (Hypertext Transfer Protocol Secure) for all pages, and regularly update your software and plugins.

Structured data

Structured data is a way of formatting your content so that it is easily understandable by search engines. This can include information about the type of content on the page, the author, the date it was published, and other relevant details. By using structured data, you can improve the rich snippets that are displayed in the search results, and make your content more visible and attractive to users.

By following these technical SEO best practices, you can improve the ranking and visibility of your website in search engines, and provide a better user experience for your visitors.