OpenPencil

Open-source, AI-native design editor. Figma alternative built from scratch with full .fig file compatibility.

Status: Active development. Not ready for production use.

Features

Figma .fig file import — open native Figma files directly
Figma clipboard — copy/paste between OpenPencil and Figma
Vector networks — complex boolean shapes and open paths, like Figma
Auto-layout — constraint-based layout matching Figma behavior
Pen tool — bezier curves with tangent handles
Inline text editing — multi-line text with Inter font
Undo/redo — all operations are undoable
Snap guides — edge and center snapping
Color picker — HSV, hue/alpha sliders, hex input

Tech Stack

Layer	Tech
UI	Vue 3, VueUse, Reka UI
Styling	Tailwind CSS 4
Rendering	Skia (CanvasKit WASM)
Layout	Yoga WASM
File format	Kiwi binary (vendored) + Zstd + ZIP
Color	culori
Desktop	Tauri v2
Testing	Playwright (visual regression), bun:test (unit)
Tooling	Vite 7, oxlint, oxfmt, typescript-go

Getting Started

bun install
bun run dev

Scripts

Command	Description
`bun run dev`	Dev server at http://localhost:1420
`bun run build`	Production build
`bun run check`	Lint + typecheck
`bun run test`	E2E visual regression
`bun run test:update`	Regenerate screenshot baselines
`bun run test:unit`	Unit tests
`bun run tauri dev`	Desktop app (requires Rust)

Desktop App

Requires Rust, the Tauri CLI, and platform-specific prerequisites (Tauri v2 guide).

cargo install tauri-cli --version "^2"
bun run tauri dev                      # Dev mode with hot reload
bun run tauri build                    # Production build
bun run tauri build --target universal-apple-darwin  # macOS universal

Cross-compilation to other platforms requires their respective toolchains or CI (e.g. GitHub Actions).

Project Structure

src/
  components/     Vue SFCs (canvas, panels, toolbar, color picker)
  composables/    Canvas input, keyboard shortcuts, rendering
  stores/         Editor state (Vue reactivity)
  engine/         Scene graph, renderer, layout, clipboard, undo, vector, snap
  kiwi/           Figma file format (Kiwi codec, .fig import)
    kiwi-schema/  Vendored from evanw/kiwi
  types.ts        Shared types
  constants.ts    UI colors, defaults, thresholds
desktop/          Tauri v2 (Rust + config)
tests/
  e2e/            Playwright visual regression
  engine/         Unit tests

License

MIT

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