Is there an easier way to post a story?

I've put a few stories up here and I'm wondering if there is an easier way than my current process.

I write my stories in LibreOffice and my first thought was to convert it html but it added a ton of extra code (mostly font/paragraph stuff that isn't needed) and I didn't like how it looked so I decided to copy-paste it instead. This leads to a ton of extra work to add blank lines and fix my formatting.

Does anyone else have a better system? Does anyone use software that does a better job converting to html?