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OpenPencil
What it is
OpenPencil is a free, open-source design editor that works with Figma files and also provides a toolkit for building custom editors. It opens and saves native .fig files and supports copying and pasting between the two applications. Its editor includes vector drawing, rich text, flexbox and CSS Grid auto-layout, components, variables, and multi-page documents. Export formats include PNG, JPG, WEBP, SVG, and Tailwind JSX, with image scaling from 0.5× to 4×. A built-in AI assistant offers 90+ tools for editing and analysis and connects to providers such as Anthropic, OpenAI, Google AI, and OpenRouter; users provide their own provider key, with no OpenPencil subscription or backend for that feature. The CLI can inspect, export, and analyze .fig files, including JSON output. Real-time collaboration uses peer-to-peer WebRTC without an account. OpenPencil describes itself as local-first, with no account or server required. Desktop binaries are available for macOS, Windows, and Linux, and the web app can be installed as a touch-optimized mobile PWA. The Free plan is free.
For and against
For
- Opens and saves native Figma files.
- Exports several image and code formats.
- Offers account-free peer-to-peer collaboration.
- Available across desktop and mobile web.
Against
- AI use requires a provider key.
- Local chat history is not cloud-synchronized or backed up.
- Does not include prototype capabilities.
- No developer handoff is listed.
The verdict
OpenPencil pairs Figma-file support with editor, CLI, and collaboration tools across desktop and web. AI access uses a provider key rather than an OpenPencil backend or subscription.
Who it suits
OpenPencil may suit designers who need a Figma-compatible editor, local-first workflows, or peer-to-peer collaboration. Its toolkit, CLI, and integrations may also suit developers building custom editing workflows.
Plans and prices
Free
No account · no subscription · MIT-licensed open-source editor
Read 7 Oct 2026 · openpencil.dev
On the record
- AI assistant
- The built-in AI assistant offers 90+ tools for design editing and analysis and can connect to providers including Anthropic, OpenAI, Google AI, and OpenRouter.openpencil.dev · read 7 Oct 2026
- AI billing
- The AI feature has no OpenPencil subscription or backend; users provide a key that connects directly to the model provider.openpencil.dev · read 7 Oct 2026
- Automation
- The CLI can inspect, export, and analyze .fig files, and supports machine-readable JSON output.openpencil.dev · read 7 Oct 2026
- Collaboration
- Real-time collaboration uses peer-to-peer WebRTC, requires no account, and sends design data directly between peers rather than through a central server.openpencil.dev · read 7 Oct 2026
- Design tools
- The editor includes vector drawing, rich text, flexbox and CSS Grid auto-layout, components, variables, and multi-page documents.openpencil.dev · read 7 Oct 2026
- Desktop platforms
- Desktop binaries are available for macOS, Windows, and Linux; the macOS app is signed and notarized.openpencil.dev · read 7 Oct 2026
- Exports
- Designs can be exported as PNG, JPG, WEBP, SVG, or Tailwind JSX, with image export scales from 0.5× to 4×.openpencil.dev · read 7 Oct 2026
- Figma files
- It opens and saves native Figma .fig files and supports copying and pasting between Figma and OpenPencil.openpencil.dev · read 7 Oct 2026
- Integrations
- The MCP server connects with Claude Code, Cursor, Windsurf, and other MCP clients over stdio or HTTP.openpencil.dev · read 7 Oct 2026
- Intended users
- The Vue SDK is intended for teams embedding a focused canvas, internal workflow tool, template editor, or AI-assisted editing surface in another product.openpencil.dev · read 7 Oct 2026
- Local data
- The product describes itself as local-first, with no account or server required, and says local chat history is not cloud-synchronized or backed up.openpencil.dev · read 7 Oct 2026
- Mobile
- The web app can be installed as a PWA on mobile and has a touch-optimized interface.openpencil.dev · read 7 Oct 2026
- Product
- OpenPencil is an open-source, Figma-compatible design editor that also serves as a toolkit for building custom editors.openpencil.dev · read 7 Oct 2026
- Security
- The MCP HTTP server enables authentication by default, binds TCP to 127.0.0.1 by default, and restricts file operations to a configured root while rejecting symlink escapes.openpencil.dev · read 7 Oct 2026
