| What it does | Turn your agent into an on-brand visual designer
| Free online Mermaid diagram viewer and editor with live preview, AI generation, and exports
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| Stage | Startup
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| Founded | 2025
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| Based in | BE
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| Pricing model | Paid
| Freemium
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| Pricing | Three plans available: Basic (1 person, 1 Mac), Personal (1 person, 2 Macs), Team (1 key per person, from 3 Macs). One-time purchase per license, includes 1 year of updates. Current prices shown in app and at checkout. Optional renewal at discount for 1, 3, or 5 years.
| Free: unlimited editor and preview, 3 saved diagrams, 5 AI uses total, PNG export 1× with watermark. Starter: $6.99/month or $69.90/year; 30 saved diagrams, 500 AI conversations per month, PNG export up to 4× without watermark. Pro: $11.99/month or $119.90/year; unlimited diagrams, unlimited AI, PNG
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| Key features | - 18 card types including device mockup, chart, code, release notes, text, milestone, table, social, goal, list, date, grid, poll, badge, flow, timeline, stats and background
- Brand template system: lock in colors, fonts and logo once, reuse across all card types
- Local Model Context Protocol server for agent integration with Claude Desktop and Claude Code
- Export to PNG, JPEG, PDF, MP4 and GIF in one size or multiple social sizes at once
- No token costs or API keys required for agent integration
- One-time purchase with one year of updates included, optional renewal at discount
- 14-day money-back guarantee on all purchases
| - Live preview of Mermaid code as you type
- AI diagram generator, editor and syntax fixer
- PNG export on every plan; JPG, SVG and PDF on Pro
- All 22+ Mermaid diagram types supported
- Share diagrams via public links and embeds
- Save diagrams to cloud with folders and version history
- Keyboard shortcuts and autocomplete
- Mobile-responsive editor with pan and pinch-zoom
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| What makes it different | - Purpose-built card types with pre-designed templates, not blank canvas tools like Canva or Figma
- Renders completely on your Mac with zero cloud or AI image generation, keeping all designs private and offline
- One-time purchase that lasts forever with no subscription, account or recurring fees
- Local AI agent integration through MCP with no tokens, API keys or cloud required
- Consistent on-brand results across all card types by locking template style once and reusing it everywhere
| - No account or sign-up required to start editing diagrams
- Affordable pricing: Starter at $6.99/month, Pro at $11.99/month
- Diagrams render in your browser; nothing stored unless you choose to save
- Fast editor with instant rendering and clear error messages
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 27 ▲ +1 (up) since last check | 6 ▲ +1 (up) since last check |
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| Trust Flow (Majestic) | 20 | 3 |
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| Citation Flow (Majestic) | 22 | 23 |
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| Referring domains (Majestic) | 69 | 12 |
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Monocards
Mermaid Viewer