Mermaidviewer

Mermaidviewer

Mermaid Viewer is a browser-based diagram editor for creating and sharing Mermaid diagrams with live preview, AI-assisted code generation, export options, collaboration, and enterprise deployment.

Mermaidviewer is developer tools software teams evaluate for creative & design. Use this page to review pricing, integration signals, and the best alternatives before you commit.

Freemium Enterprise 70/100
#69 in Developer Tools (69 tools)
Added 5 months ago
Data reviewed Jul 16, 2026

Profile facts come from the vendor source. AiMatch labels unknown pricing or API details instead of estimating them.

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Quick Overview

Best for: Creative & Design

What it does

Developer Tools software for decision-makers comparing workflow fit and alternatives.

Best fit

Creative & Design

Pricing snapshot

Freemium from $0

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Mermaidviewer

Mermaid Viewer is a browser-based editor for creating, previewing, and exporting Mermaid diagrams without installing local tools. It offers a live preview that updates as you type, AI-assisted code generation (a "Generate with GPT-4" button), export to multiple formats, and pre-built templates to speed diagram creation. The product targets developers and teams, with no-signup usage for casual users and enterprise deployment options (Docker and role-based access control) for organizations.

Privacy-first design keeps diagram data in the user's browser (the site states it does not store data), while paid plans unlock higher export quality, increased AI conversation limits, version history, collaboration features, and enterprise integration for private deployment and access control.

Mermaid Viewer is a browser-based diagram editor for creating and sharing Mermaid diagrams with live preview, AI-assisted code generation, export options, collaboration, and enterprise deployment.

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Key Features

Live Preview

Visualize changes as you type with instant rendering of Mermaid diagrams—no explicit "Render" button required.

AI-Assisted Coding (GPT-4)

A "Generate with GPT-4" button converts text descriptions into Mermaid code and paid plans include higher rates of AI conversations.

Smart Export

Export diagrams as SVG, PNG, PDF or Markdown with options for custom DPI and dark/light themes; higher-quality exports available on paid plans.

Smart Debugging

Syntax error highlighting and auto-correction suggestions to help fix Mermaid code.

Real-time Collaboration

Share editor links so team members can co-edit diagrams in real time and use version history on paid plans.

Templates

Recommended and pre-built templates (flowcharts, timelines, wireframes, etc.) to start diagrams quickly.

Enterprise Integration

Support for Docker private deployment and role-based access control for enterprise customers.

Pricing

Free Tier Available

Free plan: $0, 3 diagrams, 5 AI conversations per day, low-res PNG export with watermark, basic sharing, no version history.

Free

$0
  • 3 diagrams
  • 5 AI conversations per day
  • Low-res PNG export (with watermark)
  • Basic sharing

Starter

$69.99/year
  • 30 diagrams
  • 500 AI conversations per month
  • High-res PNG export (no watermark)
  • Unlimited sharing

Pro

$119.99/year
  • Unlimited diagrams
  • Unlimited AI conversations
  • All formats (PNG/JPG/PDF/SVG)
  • Advanced sharing & statistics

Use Cases

Architecture & System Design

Create flowcharts and architecture diagrams quickly using live preview, templates, and AI-assisted generation to accelerate design work.

Product & Project Timelines

Use timeline templates to visualize milestones and project phases for academic or product roadmaps.

Process & Governance Flows

Model governance committee decisions, agenda intake, voting, and follow-up tracking using flowchart templates.

Design-to-Engineering Handoff

Collaborate on wireframe and process diagrams with shared editor links and exports for engineering documentation.

Enterprise Private Deployment

Deploy Mermaid Viewer privately via Docker with role-based access control for internal or regulated environments.

Integrations

Docker (private deployment)

Enterprise customers can deploy Mermaid Viewer privately using Docker for on-premises or private cloud setups.

VS Code plugin

A VS Code plugin is referenced in user feedback, indicating editor integration for in-IDE diagram creation (testimonial mentions the plugin).

Benefits

Instant visual feedback with live preview that updates as you type.
AI-assisted code generation to translate text descriptions into Mermaid diagrams.
Multiple export formats and configurable export quality (SVG/PNG/PDF/Markdown).
No signup required to start creating diagrams and privacy-first behavior storing data in the browser.
Enterprise deployment options (Docker) and role-based access control for teams.

Limitations

Free plan limits: only 3 diagrams, 5 AI conversations per day, low-res PNG with watermark, and no version history.
High-quality exports, version history, advanced sharing, and priority support require paid plans.
Enterprise features (Docker private deployment and role-based access control) are targeted at organizations and may require additional setup or purchase.

Frequently Asked Questions

Claim this listing to publish FAQs.

Getting Started

  1. 1 Step 1: Enter Mermaid code in the editor (or use the GPT-4 generator to create code from a description).
  2. 2 Step 2: View the real-time preview that updates automatically as you type.
  3. 3 Step 3: Export the diagram as SVG, PNG, PDF, or Markdown or share the editor link for collaboration.

Support

docs

Documentation and tutorials available (site lists "Docs & Tutorials" and "MermaidDocs & Tutorials").

email

Contact via support email: [email protected]

API

Available: No

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