If you use hexo as blog, writing the head of post is really annoying. Snippet can help you save a lots of work, but it can't help you fullfil the tag and category, because your tag and category part are dynamic.
Fullfil the head of hexo posts
Updating your tag and category choice
Add "initHexoHead.postsPath" setting to user configure file. eg."initHexoHead.postsPath":"C:\path\to\hexo\source\_posts\"