When I look at the source code of my pages, I see lots of junk code. A lot of it comes from edits, like opening and closing tags with no content in between them, bolding words in a phrase several times instead of bolding the entire phrase with one set of tags, etc. There is also other messy code which is not necessary, some of it from page builder plugins which can add tons of code. I imagine that this could slow the site down, is this correct? Or could it negatively impact SEO?
Is there a way to clean up messy and unnecessary code without doing it all manually on each page?