Open what you already have.
Open .md and .markdown files or an entire folder. Search documents, revisit recent files, and browse the heading outline.
Read. Write. Export.
A free, open-source desktop editor to create, review, and edit your .md files, then export them as PDFs.
Designed for Windows, macOS, and Linux · public beta for Windows and Linux
- Write
- Review
One workspace for all your Markdown.
Open a file or folder, edit the source, and keep the rendered result in view. No account to create and no copying between tools.
Read as you write.
Edit Markdown and watch headings, lists, tables, links, tasks, and code blocks take shape in the live preview.
Keep several notes close at hand.
Switch between tabs, reorder documents, and find or replace text with keyboard shortcuts.
A PDF when you need one.
Export from the same workspace without moving your content into an online converter.
Your workspace, your way.
Arrange your workspace.
Show or collapse the library, editor, and preview. Resize them and return to the same layout next time.
Adjust the text.
Hold Ctrl and scroll to zoom the editor. You can also show spaces and line endings.
Choose an appearance.
Switch between light and dark themes. Your choice is remembered for future sessions.
Open files faster.
On Windows, add markdim to the Open with menu for Markdown files.
Your files stay yours.
markdim works with local files. No account, cloud sync, or telemetry. Its source code is public under the MIT License.
Find markdim on Microsoft Store.
Install the Windows app from its official Microsoft Store listing.
Frequently asked questions.
Is markdim free?
Yes. markdim is open source under the MIT License, and public beta builds are free to download with no account or subscription.
Can I create a .md file or edit an existing one?
Yes. Create a blank note, open a .md or .markdown file, then edit the text and save your changes.
Which Markdown features does the preview support?
CommonMark and Markdig advanced extensions: headings, tables, nested lists, tasks, links, images, and syntax-highlighted code blocks.
Can I export a document as PDF?
Yes. Export the document from the File menu without copying it into another tool.
Which versions are available?
Public beta downloads are currently available for Windows and Linux. The project also targets macOS; check Releases for the packages that have shipped.
Do my files stay on my computer?
Yes. markdim works with your local files and adds no online account, cloud sync, or telemetry.
Can I open a Markdown file created by OpenCode?
Yes. Markdown files created by OpenCode or other tools open like any other .md file; no special import is needed.
How can I zoom the source text?
Hold Ctrl and use the mouse wheel to zoom the editor text without changing the file.
Have a question about a release or an issue to report? Contact us on GitHub .