pen.dev
pen.dev: A free, developer-oriented canvas for AI-assisted design, imports, reusable components, and code export. Ranked #12 of 22 in AI UI Design Generators by our editors (7.7/10); pricing: Free plan; best for developers wanting a free local design canvas.
At a glance
- Editor score7.7 / 10
- PricingFree plan
- Best forDevelopers wanting a free local design canvas
- Free planYes
- Paid fromFree
- Facts checked20 Sep 2026
Where it wins
- Figma, webpage, and HTML imports become editable design layers
- Exports HTML, CSS, Tailwind, PNG, JPEG, WEBP, and PDF
- Works with MCP, IDE, CLI, and major AI coding tools
Where it doesn't
- The product is not open-source
- Paid plans may be introduced later
- Its workflow spans a desktop app, extensions, and CLI
Our verdict on pen.dev
pen.dev is an AI-assisted vector design canvas aimed at developers and product teams creating software interfaces. Its infinite canvas combines AI-assisted design generation and editing with reusable components, overrides, slots, design libraries, and variables. Developers can import Figma files, layers, webpages, and HTML as editable layers, then keep designs in Git-friendly .pen files. The product is distributed through desktop applications for Windows, macOS, and Linux, alongside a Chrome extension, IDE extensions, and a command-line tool.
The published pricing shows one plan: Free, currently available at no cost. That makes pen.dev a practical option for developers who want to explore an AI-supported design workflow without selecting among paid tiers. The product may introduce paid plans later, so teams planning a long-term purchasing process should account for possible changes. It is also not open-source, despite using an open .pen format that can be versioned in a code repository. Teams that specifically require open-source software should consider an alternative.
Its strongest fit is the connection between visual design and development tools. MCP and WebMCP integrations connect the canvas with AI workflows, while ChatGPT, Claude, Cursor, Codex, and GitHub Copilot are listed integrations. HTML, CSS, and Tailwind export support can help developers move from interface concepts toward code, while PNG, JPEG, WEBP, and PDF exports cover common design deliverables. Choose pen.dev if you want a free, local design canvas with AI, code-oriented exports, reusable systems, and repository-friendly files. Choose another product if your priority is open-source licensing or a settled paid-plan structure.
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pen.dev pricing
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pen.dev fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Prompt-to-UI generation | Not verified |
| Design-system support | Not verified |
| Multi-screen generation | Not verified |
| Responsive layouts | Not verified |
| Figma export | Not verified |
| Code export | Not verified |
| Deployment | Desktop, Browser extension |
| Platforms | Windows, macOS, Linux, Chrome extension |
| Support | Docs |
| Built for | Solo, Small business, Mid-market (editorial estimate) |
| Integrations | 7 integrations: MCP, WebMCP, ChatGPT, Claude, Cursor, Codex … |
| Pricing | Free plan (source) |
| Website | pen.dev |
| Facts checked | 20 Sep 2026 |
pen.dev integrations
pen.dev lists 7 integrations on its own site.
- MCP
- WebMCP
- ChatGPT
- Claude
- Cursor
- Codex
- GitHub Copilot
Alternatives to pen.dev
- Figma MakeA broad prompt-to-code workspace for teams moving from ideas to interactive products.9.4
- UX PilotA broad AI UI workflow for teams moving from ideas to prototypes and handoff.9.2
- VisilyAn affordable, collaborative AI prototyping workspace with broad design-to-code workflows.9.0
See all pen.dev alternatives →
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Featured on iTechGuides
pen.dev is listed in our AI UI Design Generators directory. Add the badge to your site — it links back to this page.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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