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Mermaid diagram

Open and edit MERMAID files

You can open, view and edit MERMAID files for free right here in your browser, without Mermaid Live Editor and without uploading anything. A text file in Mermaid, a Markdown-inspired language that turns short written descriptions into flowcharts, sequence diagrams, Gantt charts and more.

Files are converted in your browser and never uploaded. By using Anyfile you agree to the Terms of Use.

View an MERMAID file without Mermaid Live Editor

Open and viewYes
EditYes
Create a new oneYes, with New file (blank or from a template)
Save as MERMAIDYes, keeping what Anyfile doesn’t show
FormatBy Knut Sveidqvist, since 2014

Edit MERMAID files

Edit the text beside a live preview, with undo and find; mistakes are pointed out by line. Save the text, an SVG or a PNG. Drawn by Mermaid itself: flowcharts, sequence, class, state, entity-relationship, Gantt, pie, mind maps, timelines and more.

More about the diagram editor

.mermaid · .mmd

Mermaid diagram

A text file in Mermaid, a Markdown-inspired language that turns short written descriptions into flowcharts, sequence diagrams, Gantt charts and more.

Diagrams that live beside code and documentation and change along with them.

Opens in Mermaid Live Editor, GitHub and GitLab, VS Code, Obsidian

Questions

How do I open an MERMAID file without Mermaid Live Editor?

Drop it on this page, or choose it. It opens in Anyfile’s diagram editor right in your browser, with nothing to install and no account.

Can I edit an MERMAID file online for free?

Yes. Edit the text beside a live preview, with undo and find; mistakes are pointed out by line.

What can I convert an MERMAID file to?

SVG, PNG, or a ZIP. Drop it here and choose.

Is my MERMAID file uploaded?

No. It opens, changes and saves on your device. Nothing is sent to a server.