Like many other commenters have said, it makes a lot more sense to have this in a build step rather than doing by hand -- there's a lot of somewhat arbitrary ru

Like many other commenters have said, it makes a lot more sense to have this in a build step rather than doing by hand -- there's a lot of somewhat arbitrary rules (see when you can omit a "p" closing tag for example) that can be explicitly handled during building. However, what does this really accomplish? Does it really save that much space and bandwidth? GZIP compresses text extremely well, so I don't see the usefulness in most cases. Sure, for really slow networks, e.g. in developing countries, it might matter, but the people that this guideline are targeting are likely not going to worry about that. Maybe at Google scale it makes a difference. Beyond that, it really feels weird to omit the html tag and the head tags and I'd like to see how much more readable this optional tag omission is when you're dealing with a complex page with many meta tags and a ton of body content.