1. Paste Code
Paste your Mermaid syntax into the code editor on the left, or start with one of our built-in templates.
What is Mermaid2Img?
Mermaid2Img is an online Mermaid editor and image export tool. Paste Mermaid code, preview diagrams live, start from templates, and export PNG, JPG, SVG, or PDF in your browser for READMEs, product specs, architecture docs, and presentations.
Live previewLocal processingPNG, JPG, SVG, PDF
One Mermaid file, every output you need.
Not just rendering code. Mermaid2Img keeps editing, previewing, styling, node tweaks, and export in one flow.
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How to Use
Convert your Mermaid diagrams to images in just a few simple steps.
2. Live Preview
The diagram renders instantly in the preview panel on the right. Syntax errors are highlighted in real time.
3. Adjust Style
Fine-tune the appearance by modifying the Mermaid code. Customize colors, shapes, labels, and layout as needed.
4. Export Image
Choose your preferred format—PNG, JPG, SVG, or PDF—and download a high-resolution image with one click.
Supported Diagram Types
Mermaid2Img includes 22 common Mermaid diagram templates for mainstream technical documentation workflows.
FlowchartProcess & logicSequenceAPI & interactionClassOOP designStateState machineER DiagramDatabase modelMindmapKnowledge mapUser JourneyUser flowGanttProject timelineTimelineEvent historyRequirementRequirement traceQuadrantPriority matrixPie ChartData proportionSankeyFlow distributionXY ChartTrend comparisonCynefinDecision contextRailroadGrammar flowPacketProtocol structureGit GraphBranch historyC4 DiagramSystem contextBlock DiagramModule mapArchitectureSystem topologyTreeViewFile tree
Frequently Asked Questions
Everything you need to know about Mermaid2Img.
Where does Mermaid2Img process my diagrams?
Rendering and image export happen in your browser, so your Mermaid code stays on your device during normal use.
What export formats are supported?
We support PNG, JPG, SVG, and PDF. PNG is great for general use, SVG offers infinite scalability, and PDF is ideal for printing and formal documents.
Is my data safe?
Absolutely. All processing happens entirely in your browser. Your Mermaid code never leaves your device or gets uploaded to any server.
Can I use it for documentation workflows?
Yes. Mermaid2Img is designed for Markdown docs, product specs, architecture notes, presentations, and knowledge bases.
What diagram types are supported?
Mermaid2Img supports mainstream Mermaid diagram types including flowcharts, sequence diagrams, class diagrams, state diagrams, ER diagrams, Gantt charts, pie charts, git graphs, mindmaps, user journeys, and more.
How is the export quality?
PNG exports are rendered at 2x resolution for crisp Retina displays. SVG exports are pure vector graphics that stay sharp at any zoom level. PDF exports preserve precise layout for printing.