| What it does | Extract a design system from any website for AI
| Free online tools for flowcharts, charts, diagrams and timelines with no sign-up
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| Stage | Not given
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| Founded | Not given
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| Based in | US
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| Pricing model | Freemium
| Freemium
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| Pricing | Free: 2 design packs a day without account, 5 per day with free account. Pro: $9 per month (or $90 per year) for 50 packs per month, any page of a site, private packs, MCP server and REST API.
| Free: no account required, all diagram and chart makers, PNG/SVG/PDF export, no watermark. Pro: Monthly $9.99 a month, Yearly $99.99 a year with 7-day free trial, Lifetime $239.99 once. Euro area: €10.99 a month, €109.99 a year, €259.99 once (VAT included).
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| Key features | - DESIGN.md in Google's format describing colors, type, spacing, radii, shadows and components
- BEHAVIOR.md covering hover, focus, tooltips, menus, motion, scrolling, tables, forms and dark mode
- Screenshots at four widths: 1440, 1024, 768 and 390 pixels
- W3C design tokens (DTCG) format for Style Dictionary and Figma plugins
- CSS custom properties with all design values
- Tailwind v4 theme block
- SKILL.md for Claude Code and Cursor
- MCP server integration for AI agents to fetch packs automatically
- REST API with keys for automated access
- Private packs accessible only to the user
| - Flowchart and process diagram maker with canvas and text-to-diagram modes
- Text-to-diagram tools for UML, ER and sequence diagrams
- Chart tools: pie chart, line graph, gauge and Sankey diagram
- Automatic diagram layout from typed text
- Export to PNG, SVG and PDF without watermark
- Share diagrams with share links
- Pro: editable .drawio export and vector PDF
- Pro: multi-page documents and layers
- Diagram checks for unlabelled branches and dead ends
- Works on phone and computer
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| What makes it different | - Measured from live pages, not guessed from screenshots
- Captures behavioral details like interactions and state changes, not just visual design
- Free tier requires no account or card to try
- AI agents can use Stylepack directly with Pro via MCP server
| - Completely free with no account required and no watermark on exports
- Nothing uploaded: all work stays on your device in your browser
- Results computed by the same tested code, not manually typed
- Multiple export formats: PNG at 4 sizes, SVG and PDF
- Converts between formats: Mermaid to draw.io, SQL to ER, Visio to flowchart
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | 2 ● no change since last check |
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| Trust Flow (Majestic) | 0 | 0 |
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| Citation Flow (Majestic) | 0 | 19 |
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| Referring domains (Majestic) | 0 | 4 |
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Stylepack
Diagram Smith