Are you a writer? Are you an author? Yes, you are! The definition of a writer is:
A person who has written a particular text.
A person who writes books, stories, or articles as a job all regular occupation growth works.
Person writes in a specified way.
Composer a musical work.
The definition of an author is as follows:
A writer of a book, article, or report.
Be the author of (a book or piece of writing).
So, yes, you are in fact a writer and author. But, you say 'I'm not a writer. I'm not an author.'
Do you write for a living? Yes. Do you write content for your website? Yes. You do? Then, you are, in fact, a writer and an author. This is one of your many titles when you own and run your own website.
Another title is Researcher. Whether you write books for living or write your own content for your website you still have to do research. A lot of research.