Yes. You might as well just send a gzip'd file directly. It will be higher compression than Deflate (or if not, use BZip or 7zip), won't have the Base64 overhead, and (gasp) won't depend on a web service to decode. It also has the distinct advantage of not being really friggin annoying.

In other words, this is entirely useless, except as an amusement. Because it's funny how useless it is.