Export as PNG, SVG, or PDF
Share a crisp image, scalable artwork, or a ready-to-send document.
Merdown
Write Markdown, watch Mermaid diagrams render live, and see how both changed across your Git history.
Less than 20 MB, with no sign-in and everything kept on your Mac.
Git-diff your Mermaid diagrams
Browse the Git history already stored in your repository and switch between source changes and visual diagram changes
- View additions and removals in Mermaid or Markdown
- Toggle visual changes directly on the rendered diagram
A complete local workflow
Other features
Updates with latest Mermaid versions
Keep diagram support current as Mermaid adds syntax and capabilities.
FAQ
Everything you need to know before bringing Merdown into your workflow.
Which Mermaid diagrams does Merdown support?
Merdown supports the diagram types included with its bundled Mermaid release, including flowcharts, sequence diagrams, class diagrams, state diagrams, entity-relationship diagrams and more.
Can I compare diagrams across Git history?
Yes. Browse commits already stored in your repository, compare source changes, and inspect visual additions and removals without changing your working files.
Which files appear when I open a folder?
Merdown shows folders and supported Markdown and Mermaid files. Other file types, such as JSON, images and attachments, stay hidden because Merdown is specifically designed for editing Markdown and Mermaid. This provides an undistracted view of the documents you need to edit. If you also need to work with other file types, use a general-purpose editor such as Visual Studio Code.
Does Merdown upload my files?
No. Merdown works with local files on your Mac and does not require an account.
Which export formats are available?
You can export rendered diagrams as PNG, SVG, or PDF.
Which macOS versions are supported?
Merdown supports macOS 13 and later.
Everything local, with no account required
A small client for the full Mermaid workflow
Edit Mermaid and Markdown, review Git changes and work with local files without creating an account or moving documents to a cloud workspace
< 20 MBlightweight download
