| What it does | Free live Mermaid diagram editor with no signup required
| Inspect and edit any website like a design tool, then hand the changes to your coding agent
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
| NZ
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| Pricing model | Free
| Freemium
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| Pricing | Not given
| Free: $0 forever, no card or account required. Pro: $59 a year (about $4.92 a month billed yearly), or monthly subscription available. Lifetime: $149 once, for the first six months or 200 buyers, includes every 1.x version and version 2 at half price. Team: $12 a seat, a month, from three seats, com
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| Key features | - Live preview as you type
- 21 diagram types including flowcharts, sequence, class, state, ER, Gantt, git graph, mindmap and timeline
- Two-way editing for flowcharts
- SVG and PNG export
- Share diagrams as URLs with embedded diagram content
- Built-in template picker and cheatsheet
- No account or signup required
- Works entirely in browser with local storage
- Open Mermaid Live Editor links
- Mermaid v11 syntax support
| - Inspect CSS, Tailwind, React and HTML
- Edit the live page like a design tool
- Check WCAG 2.2 AA and usability heuristics
- Clone pages to React, Figma, PDF or HTML
- Extract design system as DESIGN.md and W3C design tokens
- MCP server for Claude Code, Cursor, Codex and other coding agents
- Full site scan
- Annotations and reports
- Page export to Figma, PDF, HTML, CSS, PNG, JPG
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| What makes it different | - No signup, paywall, or data collection required
- Diagrams stay in your browser's local storage by default
- Two-way editing that updates code when you edit the canvas
- Live preview with no render button required
- Clean SVG export for professional use in docs and slides
| - Hand changes directly to your coding agent over MCP
- All work stays on your computer, no server reads your pages
- Founding price locked for life, no surprise subscription increases
- Pay once with Lifetime option including version 2 at half price
- Full refund within 14 days, no questions asked
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 10 ▼ −4 (down) since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 5 | 0 |
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| Citation Flow (Majestic) | 27 | 12 |
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| Referring domains (Majestic) | 76 | 1 |
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FlowViz
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