Will therefore be any issues, if the h1 tag appears below the h2 tag in the code. Does the spider still know what's going on? Actually, one need not to be worried about it, as Google handles h1s and h2s so well. So, just do not make a whole page h1 or h2. People put up lots of stuff on the web. As per some study many years before, forty percentage of the web pages had syntax errors. So, it is not a big deal of having one h1 below an h2. So many people do broken web pages, ugly web pages and pages that are not really HTML. Still, Google tries to process it, as those pages may have some good details in it. So, don't worry about having, some out of order h1s or h2.