Scales without pixelation
Resize the exported diagram for a small README or a large display while keeping edges and labels crisp.
Scalable vector export
Mermaid to SVG Converter
Convert Mermaid to SVG online with a live source editor and rendered preview. Download a clean, scalable vector diagram for documentation, websites, design tools, or version-controlled assets.
Convert Mermaid source to SVG
Edit the sample or paste your own Mermaid source, confirm the preview, and download the rendered diagram as a scalable SVG file.
Convert Mermaid source to SVG
Changes render automatically in the preview.
mermaid-to-svg.mmd5 lines
Live previewWaiting
Export Mermaid diagrams without losing sharpness
SVG preserves the rendered diagram in a scalable format, making it practical for technical documentation, responsive pages, and workflows that accept SVG assets.
Ready for web and docs
Use the downloaded SVG in documentation sites, repositories, wikis, and tools that accept vector assets.
Live Mermaid preview
See the rendered result update as you edit and keep syntax feedback beside the source.
No local setup
Work in a modern browser without installing Mermaid CLI, a desktop app, or an editor extension.
Continue in OnUML
Move the current source into the full editor for AI generation, repair, sharing, and saved projects.
How to convert Mermaid to SVG
Validate the source and preview before downloading so the exported vector contains the intended structure, labels, and theme.
- 01
Paste Mermaid source into the editor or adapt the working example.
- 02
Check the live preview and resolve any syntax error shown beside the editor.
- 03
Select a Mermaid theme that matches the destination document or website.
- 04
Review long labels, line crossings, and diagram direction at the intended width.
- 05
Choose Download SVG and save the vector file for your documentation workflow.
Why SVG works well for Mermaid diagrams
Mermaid produces structured diagrams with text and geometric shapes, which map naturally to vector output and remain readable across different display sizes.
SVG stays sharp at every size
Unlike a fixed pixel image, an SVG can scale with a responsive page or high-density display without making text and connector lines blurry.
Preview before exporting
The converter renders the current source first. Treat the preview as the export result and fix syntax, clipping, or layout issues before downloading.
Choose a theme for the destination
Theme colors are included in the rendered output. Select the theme against the background where the SVG will be published.
SVG vs PNG
Choose SVG for scalable documentation and web publishing. Choose PNG when the destination only accepts raster images or needs a simple image attachment.
Mermaid to SVG example
The default flowchart models the conversion workflow itself. Change its labels or replace it with any supported Mermaid diagram before downloading SVG.
flowchart LR
Source[Mermaid source] --> Render[Render diagram]
Render --> Review{Preview correct?}
Review -->|No| Source
Review -->|Yes| Export[Download SVG]Compare diagram workflows
Mermaid and PlantUML for text-based diagrams
Compare syntax, supported diagram types, rendering workflows, and the tradeoffs that matter when diagrams live with technical documentation.
Read the Mermaid vs PlantUML guide →Related Mermaid tools
Continue with the general editor, browse this release’s tool directory, or compare the diagram with a related modeling view.
Mermaid Online Editor
Write Mermaid source, preview the result, and export SVG or PNG.
Open tool →Mermaid Tools
Choose a focused Mermaid editor for the diagram you need to create.
Open tool →Mermaid to PNG Converter
Render Mermaid source and export a high-resolution PNG for slides and sharing.
Open tool →Frequently asked questions
How do I convert Mermaid to SVG?
Paste valid Mermaid source, verify the live preview, and select Download SVG. The browser saves the currently rendered diagram as a vector file.
Does SVG lose quality when resized?
No. SVG is vector-based, so lines, shapes, and text remain sharp when the diagram is displayed at different sizes.
Can I convert any Mermaid diagram type?
You can export diagram types supported by the Mermaid version used by the editor, including common flowchart, sequence, class, ER, state, and Gantt syntax.
Do I need Mermaid CLI?
No. Editing, previewing, and SVG export run in the browser without a local Mermaid installation.
Can I change the SVG theme?
Yes. Select a Mermaid theme before downloading. The exported SVG reflects the rendered theme.
Should I use SVG or PNG?
Use SVG for scalable web pages and documentation. Use PNG for presentations, uploads, and systems that require a raster image.