Free online tool

Mermaid chart viewer

Paste Mermaid code or open a file. Explore your chart with zoom, search, and themes, then export it.

Loading the Mermaid viewer…

Start with your source

Paste Mermaid text, open a .mmd, .mermaid, or .txt file, or load an example. Select Render diagram after editing. No sign-in needed.

Read the whole picture

Hide the editor for a wider view. Pan, zoom, search labels, and use the overview map to navigate large charts. Download Mermaid source, SVG, PNG, or PDF from the export menu.

Bring it into Confluence

Use the same Diagram Lens reader on your team’s Confluence pages, with editable Mermaid source close to your documentation.

Explore Diagram Lens for Confluence →