The objective of this study is to start understanding SEO when you are a web developer to help increase your knowledge to be able to offer more for your costumers. It aims to look at the bigger picture and try to touch a lot of areas within SEO without going in deep into every part. This study has taken help from several blogs and sources about SEO, mainly from the internet, to build a base of knowledge to put in to the implementation. And to test the results several SEO tools have been used, such as Google Analytics, Siteliner and Googles structured data testing. All tools for measuring different parts of SEO. Also a user experience test has been conducted to understand how visitors navigate to find information on the site and what roll content value has in SEO. To understand how to implement SEO in both code and content this study has 2 projects in its aim, one being translating posts and making sure the SEO is up to part for a medical blog and the other developing a website for a drop-in solarium business and implementing SEO into it. This study goes from braking down parts of SEO, explaining them whiteout going too deep, implementing them in both content and code and to finish testing and analyzing it.