Deepdwn is an offline-only, feature-rich Markdown editor for Windows, Mac, and Linux.

Deepdwn application window with panels for filters, file list, document outline and editor.

Deepdwn supports organizing documents by both tags and categories stored in your document’s YAML front matter, and supports backlinks to connect documents together.

Deepdwn has a number of editing features, like document outline, distraction-free mode, table auto-formatting and editing, Vim and Emacs keybindings, automatic list continuation, persistent section folding, image drag-and-drop and in-editor image preview, per-file and global word count history, and special effects for writing streaks.

Deepdwn also supports some additional block elements:

  • Mermaid diagrams
  • AsciiMath, Katex, and mhchem for math and chemistry rendering
  • Sheet music, guitar tabs, and songbooks

Deepdwn Markdown Support

Deepdwn provides support for the following Markdown elements.

ElementSupportNotes
HeadingsYes
ParagraphsYes
Line BreaksYes
BoldYes
ItalicYes
BlockquotesYes
Ordered ListsYes
Unordered ListsYes
CodeYes
Horizontal RulesYes
LinksYes
ImagesYes
TablesYes
Fenced Code BlocksYes
Syntax HighlightingYes
FootnotesYes
Heading IDsPartialHeading IDs are automatically generated and link to headings via autocomplete.
Definition ListsYes
StrikethroughYes
Task ListsYes
Emoji (copy and paste)Yes
Emoji (shortcodes)No
HighlightYes
SubscriptYes
SuperscriptYes
Automatic URL LinkingYes
Disabling Automatic URL LinkingYes
HTMLYes

Support for Additional Syntax Elements

As an added bonus, Deepdwn provides support for several obscure elements.

ElementMarkdownRendered Output
Abbreviation*[HTML]: Hyper Text Markup Language
The HTML specification is maintained by the W3C.
The HTML specification is maintained by the W3C.
Center->This text has been centered<-
This text has been centered
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