
Do the theme and code have an effect on SEO?
Yes, do not doubt it.
Look at the image above: this chart is from one of our client’s sites.
The number of posts is the same, we did not touch it at all.
Only the theme was worked on, and it was replaced.
See how, after a while, its growth doubled.
Choosing the right theme has a strong effect on your SEO.
Every theme suits a particular job: one for a portfolio, one for a company site, one for news, one for a store. If you turn a corporate theme into a shop, you will not get good feedback, and so on.