Figma-Compatible
Opens .fig files natively. Copy & paste between Figma
and OpenPencil. Kiwi binary codec with round-trip fidelity.
Founder tool
Open Pencil
Open-Source Design Editor
Opens Figma files. Built-in AI. Fully programmable. Also a toolkit for building custom editors.
What it is
CapabilitiesProgrammable
Headless CLI to inspect, export, and analyze .fig files.
Figma Plugin API via eval. Tailwind CSS export. JSON
output for CI and automation.
Toolkit, not just app
Build custom editing surfaces with the Vue SDK, embed OpenPencil into other products, or assemble workflow-specific editors around the same core.
AI-Native
Built-in chat with 90 tools — create shapes, set styles, manage layout, analyze tokens. MCP server for Claude Code, Cursor, Windsurf.
Open Source
MIT license. Read and modify everything — the editor, the engine, the file codec, the CLI.
Free & Local
No account, no server, no internet required. ~7 MB desktop app via Homebrew, or use the web app.
Real-Time Collaboration
P2P via WebRTC — no server. Share a link, edit together with live cursors and follow mode.
Download
Version 0.14.0Before you install
NotesDownloads come from GitHub. Every link above points at the open-pencil project's own release page — the files are not hosted on ÍL·LUKI infrastructure and are not modified by us.
Your files are not backed up by the estate. Open Pencil stores documents on your machine and collaborates peer-to-peer. Nothing is written to ÍL·LUKI servers, so nothing is covered by estate backups.
Coding-agent features need the desktop app. The MCP server and Claude Code integration run locally and are not available in a browser.