using absolute path for assets in posts.
enabling hexo post_asset_folder
only makes the relative asset path work in post page, while in other page like index,category and tag the path will broken.
npm install --save hexo-filter-pathfix
- install package
- enable
post_asset_folder
in your hexo config file_config.yml
- reference assets in relative path in your post

the above will produce:
<img title="this is the cover" src="/2015/01/18/post-title/cover.jpg">
MIT