Does every draw.io file convert perfectly?

No. Supported flowchart and sequence structures work best, especially in single-page files, whether compressed or uncompressed XML.

Which draw.io diagram types convert best?

Flowcharts, sequence diagrams, class diagrams, entity-relationship diagrams, mindmaps, and git branching diagrams convert natively. Swimlane, org chart, BPMN, and network diagrams keep their structure but render as flowcharts. Gantt charts and bar or pie charts need AI enhancement, and the recovered values are approximate.

Can one file hold several diagrams?

No. Import handles one diagram at a time; a page with several unrelated diagrams on it is rejected rather than partly converted. Copy the diagram you want onto its own page and re-export.

Is draw.io import free?

Yes. draw.io import is free and needs no signup; the optional AI-enhance toggle for messier diagrams is included with Pro and Premium, or payable per use from a credit pack.

Why convert draw.io to Mermaid?

Mermaid source is easier to diff, review, and maintain alongside docs or code.

How do I import a draw.io file into Mermaid?

Export the diagram from draw.io as XML (compressed or uncompressed both work), upload that file here, and the importer returns Mermaid source you can review, beautify, and export. Single-page files with one diagram convert most reliably.

Guide

Convert draw.io to Mermaid

Convert supported draw.io XML diagrams into Mermaid, beautify the result, and export cleaner diagrams for docs and presentations.

Follow the workflow, open the example in the editor, then export or save the cleaner result.

At a glance

Use this guide when a draw.io diagram should become easier to maintain as Mermaid source and cleaner to export for documentation.

Export draw.io as XMLImport into Beauty DiagramWhat converts, by diagram typeReview the Mermaid outputBeautify and save

Export draw.io as XML

Use a single-page .drawio or .xml export. The default compressed .drawio export and plain uncompressed XML both parse cleanly.

Prefer one diagram page at a time
Keep labels readable before import
Avoid relying on hidden canvas-only context

Import into Beauty Diagram

Upload the draw.io XML into the editor. Supported flowchart and sequence structures are converted into Mermaid source for review.

What converts, by diagram type

Conversion quality depends on the diagram type, so it helps to know what to expect before you upload. Flowcharts, sequence diagrams, class diagrams, entity-relationship diagrams, mindmaps, and git branching diagrams convert natively. Class and ER diagrams rely on recognizable UML or ER relationship arrows — one drawn with plain arrows imports as a flowchart instead, and AI enhancement usually reads it. Swimlane, org chart, BPMN, and network diagrams keep every node, label, and grouping but arrive as flowcharts. Gantt charts and bar or pie charts are drawn by hand in draw.io with the numbers living in the shapes themselves, so those need AI enhancement too, and the recovered values are approximate rather than exact.

Flowchart, sequence, class, entity-relationship, mindmap, git branching: native conversion
Swimlane, org chart, BPMN, network: structure kept, rendered as a flowchart
Gantt and charts: use AI enhancement; values are approximate
One diagram per page — a canvas holding several separate diagrams is rejected rather than partly converted

Review the Mermaid output

Conversion is a starting point, not a guarantee of perfect semantics. Rename nodes, remove duplicates, and simplify labels before export.

Beautify and save

After conversion, use the beautify step, export SVG or HD PNG, and save the Mermaid version in Diagram Hub for future edits.