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Browser-based image export

Mermaid to PNG Converter

Convert Mermaid to PNG online from editable source and a live preview. Export a browser-rendered image for slides, documents, tickets, chat, and other image-based workflows.

Convert Mermaid source to PNG

Paste Mermaid source, check the rendered result, and download a PNG for slides, tickets, documents, and image-based sharing.

Convert Mermaid source to PNG

Changes render automatically in the preview.

mermaid-to-png.mmd7 lines
Live previewWaiting

Open full editor

Turn Mermaid source into a portable image

PNG works in presentation software, issue trackers, messaging tools, and publishing systems that cannot render Mermaid source or accept SVG files.

Rendered for the current diagram

Export the current diagram as a fixed-pixel image, with browser scaling of up to twice its rendered dimensions when the device supports it.

Broad compatibility

Use PNG in tools that accept ordinary images but cannot embed Mermaid source or SVG 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 PNG

Render and inspect the diagram first, then export only after its labels, layout, and theme match the destination.

  1. 01

    Paste your Mermaid code or edit the working sequence diagram example.

  2. 02

    Wait for the live preview and fix any reported syntax issue.

  3. 03

    Choose a theme with enough contrast for the slide, document, or message background.

  4. 04

    Review label size and diagram width because PNG uses fixed pixels after export.

  5. 05

    Choose Download PNG and save the image for sharing or attachment.

Preparing a readable Mermaid PNG

A PNG is easy to share but has a fixed resolution, so layout, label length, contrast, and the intended display size should be checked before export.

Design for the final display size

Simplify dense diagrams and shorten labels before export so readers do not need to zoom into a fixed-size image.

Use contrast that survives sharing

Select a theme that remains legible against the destination background and after presentation or messaging tools process the image.

Keep the Mermaid source

PNG is an output asset, not the maintainable model. Store the Mermaid source so the diagram can be revised and exported again.

PNG vs SVG

Choose PNG for broad image compatibility. Choose SVG when lossless scaling, responsive display, or an SVG-based workflow matters more.

Mermaid to PNG example

The editable sequence shows the path from source to preview to PNG export. Replace it with your diagram and download the rendered image.

sequenceDiagram
    participant Author
    participant Preview
    participant Export
    Author->>Preview: Paste Mermaid source
    Preview-->>Author: Render diagram
    Author->>Export: Download PNG

Keep diagrams maintainable

Compare Mermaid and PlantUML workflows

Understand how text-based diagrams stay reviewable even when the published result is a PNG image.

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 SVG Converter

Preview Mermaid source and download a scalable SVG for documentation and the web.

Open tool →

Frequently asked questions

How do I convert Mermaid to PNG?

Paste Mermaid source, confirm the live preview, and select Download PNG to save the rendered diagram as a raster image.

What resolution does the PNG use?

The PNG follows the rendered diagram dimensions and can use the browser device scale up to 2x. For arbitrary resizing or large-format output, use SVG instead.

Can I export a sequence diagram to PNG?

Yes. Sequence diagrams and other Mermaid diagram types supported by the editor can be rendered and downloaded as PNG.

Do I need to upload my Mermaid file?

No. You can paste or edit the source directly in the browser and export the rendered result.

Why does my PNG look too small?

Dense diagrams or long labels may need a simpler layout. Reduce content or adjust direction before exporting, or use SVG when arbitrary scaling is required.

Should I keep the Mermaid source after exporting?

Yes. Keep the source as the maintainable version so you can edit the diagram and generate a new image later.