Mermaid diagram to HTML converter
Get a single, self-contained web page from Markdown with Mermaid diagrams - no scripts and no diagram library needed to view it.
How to use the Mermaid to HTML converter
- Paste your Markdown with mermaid code blocks, or upload the .md file.
- Choose HTML as the format.
- Download the .html file, or copy it from the preview.
What stays intact
- Every diagram embedded as an image inside the page
- Flowcharts, sequence diagrams, charts and mind maps
- Headings, tables, lists and code blocks
- One file: no separate image folder to upload
- No scripts in the result
About the Mermaid to HTML converter
Works without JavaScript
Normally a page needs the Mermaid library to show diagrams. Here every diagram is drawn once and embedded as a picture, so the page displays correctly in email, wikis, content management systems and anywhere scripts are blocked.
One self-contained file
Images are stored inside the HTML file itself, so you can send or upload a single file without worrying about broken image links.
When to use it
Share architecture notes, runbooks, release notes or documentation with diagrams as a web page, or paste the content into a tool that accepts HTML but not Mermaid.
Good to know
Diagrams become pictures, so the text inside them is not selectable. Keep the original Markdown to make changes later and convert again.
Diagrams come out as real pictures
Write Mermaid in your Markdown. Every flowchart, sequence diagram and chart is drawn in your browser and placed in the PDF, Word or HTML file as a sharp image, so readers see the diagram, not the code.
Supported: flowcharts, sequence, class, state and ER diagrams, pie and Gantt charts, mind maps, timelines and every other Mermaid type.
Frequently asked questions
- Does the page need the Mermaid library?
- No. Diagrams are already drawn and embedded as images, so the page shows them without any scripts.
- Are the diagrams separate image files?
- No. They are embedded inside the HTML file, so one file holds everything.
- Can I preview the page before downloading?
- Yes. After converting, the preview shows the rendered page with your diagrams, and the HTML source in a second tab.