Markdown is rendered using [Hoedown](https://github.com/hoedown/hoedown/) and displayed using an integrated web browser. This all Markdown syntax (including images) are supported.
MDiary supports gpg encrypted entries. To use this feature, place a gpg encrypted entry as *<name>.md.gpg* in the workspace. MDiary will automatically show a decrypt button in the header bar which will invoke gpg to decrypt all encrypted entries in the workspace for this session.