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pencil.dev is now pen.dev
pen.dev

pen.dev is an agentic canvas
for building bold ideas.

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Never start
from scratch.

Import any part of any app onto
the canvas.

Made in pen.dev.

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Bring any model
to the canvas.

Claude

Open AI

Grok

Qwen

Gemini

Kimi

Deepseek

Minimax

Use with ChatGPT or Claude subscription,
add API keys or connect via MCP, WebMCP or CLI.

Design with agents directly on the canvas. Refine manually or fire up agents.

Design with agents directly on the canvas.
Refine manually or fire up agents.

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Buttery smooth performance

Thousands of layers stay smooth as you pan, zoom, and edit powered by a custom WebGL pipeline.

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HTML import

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Components

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Figma import

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Open format

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Built-in browser

Open any page inside the app and import it straight onto the canvas.

Vibe Shaders. Create stunning visual effects with shaders.

Vibe Shaders.
Create stunning visual effects with shaders.

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Shaders

Visual effects powered by real-time shaders gradients and textures at your fingertips.

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Variables

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Snapping

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Chrome extension

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Slots

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Pen tool

Draw paths, edit curves, and paste SVG code straight into your designs with ease.

AI Pen. Draw icons and illustrations with agents.

AI Pen.
Draw icons and illustrations with agents.

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UI Libraries

Share component sets across files and keep every project in sync.

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Measurements

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Layers panel

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Effects

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Pixel grid

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Familiar shortcuts

The shortcuts you know from Figma and Sketch work the same way here.

Design via MCP in addition to the on-canvas agent. Connect Claude Code, Codex, Hermes, Antigravity, Cursor or any agent to pen.dev through MCP.

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You can also design headlessly with pen.dev CLI.

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Gradients

Edit linear, radial, angular and mesh gradients right on the canvas.

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Built-in design skills

Elevate your work with built-in industry standard design skills.

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Export 1x, 2x, 3x…

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Slides

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HTML export

Directly export any frame as HTML
and CSS/Tailwind in 1-click.

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Flex layout

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Scale

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Share by link

Send a link and anyone can open the latest version in their browser.

The design features
you expect.

Feel like at home.

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Buttery smooth performance

Thousands of layers stay smooth as you pan, zoom, and edit powered by a custom WebGL pipeline.

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Pen tool

Draw paths, edit curves, and paste SVG code straight into your designs with ease.

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Shaders

Visual effects powered by real-time shaders gradients and textures at your fingertips.

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Figma import

Import .fig files with layouts, styles and images.
Or just copy/paste from Figma directly.

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Built-in browser

Open any page inside the app and import it straight onto the canvas.

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Chrome extension

Copy any webpage in Chrome.
Paste to the canvas as editable layers.

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HTML import

Import any webpage as editable layers
via built-in browser.

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Components

Create reusable symbols with overrides
and combine them in complex layouts.

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Gradients

Edit linear, radial, angular and mesh gradients
right on the canvas.

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Variables

Name your colors, spacing and type once
and reuse them everywhere.

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HTML export

Directly export any frame as HTML
and CSS/Tailwind in 1-click.

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UI Libraries

Share component sets across files and keep
every project in sync.

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Component Slots

Reserve space inside a component for content
each instance fills in.

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Familiar shortcuts

The shortcuts you know from Figma and Sketch work the same way here.

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Scale

Resize a group, its text, strokes, radii and effects
all scale along with it.

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Measurements

Hover to read exact distances between any two layers on the canvas.

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Flex layout

Fill container, hug content, position absolutely,
align to edges.

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Effects

Background blur, drop shadow and layer blur, stacked in any order.

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Export 1x, 2x, 3x…

Export any frame as PDF, PNG, JPEG or WEBP
at the exact size you need.

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Built-in design skills

Elevate your work with built-in industry standard design skills.

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Snapping

Layers snap to edges, centers and equal spacing while you drag them.

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Pixel grid

Design your icons and logos precisely. Snap
to pixels and half-pixels when drawing.

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Layers panel

Reorder, hide, group, rename, and select any layer with full control.

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Slides and Presentation mode

Build great looking slidedecks, organize them
in Slides view, and present like a pro.

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Share by link

Send a link and anyone can open the latest version in their browser.

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Open design format .pen

It's just a JSON file that allows agents to work with
it natively. Schema fully opened. See docs.

This list goes on and on and on…

Killer performance. 10000 photos, 10GB of content, 60fps, no problem.

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Start building
your ideas today.

Design with agents, refine every detail on canvas,and ship it back to code.

Download pen.dev