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Mermaid Chart

Mermaid Chart - A smarter way to create diagrams | Product Hunt


Mermaid Chart was born out of the Mermaid open source project and was founded by Knut Sveidqvist together with Open Core Ventures. The lead developers from Mermaid have joined the company and there is a strong connection between the project we all love and Mermaid Chart. Mermaid Chart brings resources to the open source development of Mermaid and makes it possible to work with Mermaid professionally.


  • Editor - A web based editor for creating and editing Mermaid diagrams.

  • Presentation - A presentation mode for viewing Mermaid diagrams in a slideshow format.

  • Collaboration - A web based collaboration feature for multi-user editing on Mermaid diagrams in real-time (Pro plan).

  • Plugins - A plugin system for extending the functionality of Mermaid.

    Plugins are available for:

  • AI diagramming - A feature for generating Mermaid diagrams from text using AI (Pro plan).

  • More - To learn more, visit our Product page.


  • Free - A free plan that includes five diagrams.

  • Pro - A paid plan that includes unlimited diagrams, access to the collaboration feature, and more.

  • Enterprise - A paid plan for enterprise use that includes all Pro features, and more.


Sign up for a free account at Mermaid Chart.

Mermaid Chart is currently offering a 14-day free trial of our newly-launched Pro tier. To learn more, visit our Pricing page.

Mermaid JS contributions

First time contributors are eligible for a free Pro tier account for 1 year.