Private by defaultNo credit cardMermaid 11Team-readyVercel hosted

From description to diagram in seconds

MermaidGenie converts plain English into crisp UML class diagrams with instant previews, shared links, and export-ready assets.

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Diagrams generated

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Teams onboard

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Average rating

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Countries covered

Proof at scale

Big numbers. Clear outcomes.

Track adoption, velocity, and diagram quality at a glance.

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Mermaid nodes rendered

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Relationships mapped

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Docs stitched to diagrams

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Hours saved by teams

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Diagram versions stored

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Median time to first draft

How it works

From prompt to production-ready diagrams

A short, focused workflow designed for busy engineering teams.

01

Describe

Write a short prompt or paste a spec in plain English.

02

Generate

Gemini outputs valid Mermaid with clean naming conventions.

03

Refine

Edit nodes, relations, and labels with live preview.

04

Share

Export PNG/SVG or send a secure read-only link.

Capabilities

The full MermaidGenie toolkit

Everything you need to generate, refine, and share diagrams with confidence.

AI-generated UML

Gemini writes valid Mermaid, complete with class relationships.

Prompt templates

Save reusable prompts for recurring system patterns.

Instant preview

Live Mermaid rendering with no compile or refresh delays.

Versioned diagrams

Track changes and roll back to earlier snapshots.

Workspace organization

Projects, tags, and folders keep large catalogs tidy.

Privacy-first design

Everything is private by default with secure link sharing.

Export-ready

PNG, SVG, and Markdown exports for every diagram.

Token-aware theming

Light/dark modes adapt to your design system tokens.

Share in seconds

Send read-only links or embed diagrams in docs.

Performance snapshot

Built for fast iteration cycles

Typical results from internal beta runs and staging workloads.

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Typical time to first diagram

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Average render time

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Edit sync latency

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Exports queued per minute

Use cases

Where teams use Genie

From planning and onboarding to architecture reviews and stakeholder updates.

Architecture reviews

Replace whiteboard photos with crisp class maps.

Pitch decks

Explain systems to non-devs without lorem-ipsum UML.

API design

Model data contracts before writing a single line of code.

Onboarding

New hires learn your stack with interactive diagrams.

Documentation

Generate UML from existing docs – no manual work.

Design systems

Visualize component hierarchies and relationships.

Governance

Team controls, built in

Keep workspaces organized, audit-ready, and aligned with your team’s standards.

  • Private workspaces by default
  • Shareable links with read-only access
  • Role-based access controls
  • Audit-ready activity timeline
  • Diagram version history snapshots
  • Workspace-level branding & theming

Integrations

Fits your existing workflow

Embed diagrams where teams already work and move faster with automation.

  • Markdown + Mermaid exports for docs
  • Copy/paste from Jira, Linear, or Notion
  • VS Code extension on the roadmap
  • API-first architecture for automation
  • Embed diagrams into internal portals
  • Single sign-on for teams (coming)

Stack

Built with modern tech

Reliable infrastructure designed for smooth diagram workflows.

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Vercel
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Mermaid 11
Express.js
Node.js
TypeScript
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Tailwind CSS
Shadcn UI

Testimonials

Loved by devs

Teams of all sizes use MermaidGenie to communicate architecture faster.

MermaidGenie slashed our onboarding docs from pages to one neat diagram!

Linh N.

Frontend Lead

We draft flows in meetings and share links instantly. Huge time-saver.

Ethan P.

Product Manager

Zero learning curve. Copy Mermaid straight into markdown – done.

Sara A.

Dev-Rel

FAQ

FAQ

Open-source friendly

MermaidGenie’s core libraries are MIT-licensed. Contribute on GitHub or fork the Gemini prompt templates for your own stack.

Ready to diagram?

Sign in & create unlimited diagrams – free while in beta.