I made the switch a few years ago from working primarily on Desktop apps to primarily Web apps, and beforehand I had this exact feeling. In my experience, web

I made the switch a few years ago from working primarily on Desktop apps to primarily Web apps, and beforehand I had this exact feeling. In my experience, web apps are way, way easier than Desktop apps in almost every way, aside from maybe if you have to figure out scaling really big (which you probably don't most of the time). You can probably learn everything you really need to know about web apps to clear that spooky feeling just by working at a new job for a month or two. It's not a huge shortcoming at all in reality, because at the end of the day, software is software. You can write software, so you'll be fine and may already be better than people calling themselves "web developers." Also, I don't know if this applies to you, but in my case part of the reason I had this spooky feeling was because the people who I knew who called themselves "web developers" before I actually started doing "web development" were not very skilled, and were inclined to portray it as Magic to other people, so that they could they could feel the satisfaction of being a sort of Arcane Web Magician. Plus, it was magic to them, because they didn't really understand it. If you have people like this around you, I suggest you ignore them and, if you need support, find people who are able to explain details clearly to you without presenting it as magic, or at least point you towards resources that can. Once I was able to do that, it made a big difference in my confidence in my own abilities and helped me improve as a professional tremendously.