Editions & Pricing
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Mermaid Studio is available as two separate plugins: Mermaid Studio Core (freemium) and Mermaid Studio (paid). Both support all 26 diagram types. The difference is which paid features are included.
Three tiers
Section titled “Three tiers”- Free — Install Mermaid Studio Core. Syntax highlighting, live preview, Markdown integration, and export for all 26 diagram types.
- Core ($49/yr) — Add a Core license to Mermaid Studio Core. Includes advanced tools and full code intelligence support for 6 core diagram types.
- Studio ($99/yr) — Install Mermaid Studio. Includes all Mermaid Studio features for all supported diagram types.
Feature comparison
Section titled “Feature comparison”| Feature | Free | Core | Studio |
|---|---|---|---|
| Diagram types supported | All 26 | All 26 | All 26 |
| Syntax highlighting | ✓ | ✓ | ✓ |
| Basic validation | ✓ | ✓ | ✓ |
| Live preview | ✓ | ✓ | ✓ |
| Export to PNG/SVG | ✓ | ✓ | ✓ |
| Markdown integration | ✓ | ✓ | ✓ |
| Brace matching & code folding | ✓ | ✓ | ✓ |
| Frontmatter YAML completion | ✓ | ✓ | ✓ |
| Bundled icon sets (FontAwesome, AWS, Azure, GCP) | ✓ | ✓ | ✓ |
| Semantic inspections | — | 6 core types | ✓ |
| Smart completions | — | 6 core types | ✓ |
| Code formatting | — | 6 core types | ✓ |
| Refactoring & find usages | — | 6 core types | ✓ |
| Structure view | — | 6 core types | ✓ |
| Code vision & inlay hints | — | 6 core types | ✓ |
| Documentation hover | — | 6 core types | ✓ |
| Gutter icon color picker | — | ✓ | ✓ |
| Drag-and-Drop flowchart editor | — | ✓ | ✓ |
| Theme CSS highlighting & completions | — | ✓ | ✓ |
| MCP tools for AI agents | — | ✓ | ✓ |
| Diagram sync (auto-export) | — | ✓ | ✓ |
| Print dialog | — | ✓ | ✓ |
| Custom icon set import | — | ✓ | ✓ |
Feature availability varies by diagram type. See the Diagram Types Overview for supported features per type.
Core diagram types
Section titled “Core diagram types”The 6 core diagram types were chosen for what software developers reach for daily:
| Type | Use case |
|---|---|
| Flowchart | Logic flows, algorithms, decision trees |
| Sequence | API interactions, service calls, protocol design |
| Class Diagram | OOP modeling, package structure, inheritance |
| State Diagram | State machines, lifecycle modeling |
| ER Diagram | Database schema design, data modeling |
| Block Diagram | Component layouts, system diagrams |
Which edition should I install?
Section titled “Which edition should I install?”- Start with Mermaid Studio Core if you are new to Mermaid, want to try before you buy, or primarily work with the 6 core diagram types.
- Choose Mermaid Studio if you need full IDE intelligence across all diagram types.
Both editions are installed from the JetBrains Marketplace. They cannot be installed at the same time.
Pricing
Section titled “Pricing”| Personal | Commercial | |
|---|---|---|
| Core | $4.90/mo or $49.00/yr | $9.90/mo or $99.00/yr |
| Studio | $9.90/mo or $99.00/yr | $19.90/mo or $199.00/yr |
30-day free trial for both Core and Studio. No credit card required.
Volume discounts available for commercial licenses (5+ seats: 5%, 20+ seats: 10%, 50+ seats: 20%).
Switching editions
Section titled “Switching editions”Mermaid Studio and Mermaid Studio Core are separate plugins with separate marketplace subscriptions.
Free to Core: Purchase a Core license from the JetBrains Marketplace. Activate it in your IDE under Settings > Plugins > Mermaid Studio Core.
Core to Studio (monthly): Cancel your Core subscription, uninstall Mermaid Studio Core, install Mermaid Studio, and subscribe to a Studio license.
Core to Studio (annual): Contact [email protected] to request a prorated upgrade discount.
Studio to Core: Cancel your Mermaid Studio subscription, uninstall Mermaid Studio, then install Mermaid Studio Core and purchase a Core license.
Your IDE settings and preferences are preserved when switching plugins.
I already have Mermaid Studio. What changed?
Nothing! Your experience is unchanged. Mermaid Studio Core is a new, separate product for users who want a free starting point.
Can I switch between editions?
The two plugins have separate marketplace subscriptions. Monthly subscribers can cancel and resubscribe to the other edition. Annual Core subscribers upgrading to Studio can contact [email protected] for a discounted upgrade.