A Lightweight Markdown Previewer

Markoff is a lightweight Markdown (CommonMark) previewer that allows you to open any Markdown file and preview it in a stylized HTML rendering (Github-inspired).

- Auto-refreshes whenever the file is saved.
- Remembers your scroll position.
- Recognize YAML front-matter and shows it as a code snippet.
- Allows you to select your default GUI editor.
- Open current file in editor using Cmd-E.
- Shows up-to-date word and character count.

Markoff is open source and contributions are welcome:

What’s New

Version 1.0.1

- Add ability to open .txt files
- Fix performance issue related to word count
- Default to system Markdown editor if it exists
- Center default window position and make it larger
- Remove unused New menu item

Ratings and Reviews

3.1 out of 5
35 Ratings

35 Ratings

BornToSki ,

Hangs every time you try to print; requires force quit and restart

Overall, this app is OK. Its output looks decent, and it’s free, which is nice.

However, it crashes EVERY TIME I try to print. If I use the File => Print menu item, then I get a modal alert window saying “Printing Not Allowed” and “This application is not allowed to print. Please contact your application vendor for an update.” Then the app hangs and beachballs and locks up and I need to force quit it.

Ummm, OKKKK … What am I supposed to do with this? If the app can’t print, then remove the File => Print option from the menu. Or else fix print. But don’t hang everytime I try to print. This severely compromises usability and makes me not want to use this otherwise good app.

Please fix ASAP! If you fix printing, I’ll happily update my review to reflect this … Thanks.

My initials are BS ,

Makes me feel a lot better about editing Markdown in Sublime Text

I started with Markdown in Sublime Text. I love Sublime Text for editing in Markdown but never felt satisifed with the packages available for rendering the documents. Too many steps and the auto-refresh after saves didn't work reliably for me.

Then I met Markoff. So simple. So delightful. Now my default markdown application is Markoff. When I open a markdown document, it's pretty by default. If want to edit the thing, I put my left thumb on the Command key and my right index finger on the E key. BOOM! Sublime Text. Magical. If I save an edit in Sublime Text, then... ANOTHER BOOM! Markoff registers the save and updates the rendering to reflect it. Markoff is watching you while you are using your favorite editor. Don't worry: It's got your back.

So, if you primarily use your dedicated Markdown editor to render your Markdown that you write elsewhere, then I think it's possible that Markoff is EXACTLY what you need.

Joseph E. ,


This application is a life-saver!


thoughtbot, inc.
3.7 MB

OS X 10.11 or later, 64-bit processor



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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