onlook-dev/onlook

TypeScriptonlook.com

The Cursor for Designers • An Open-Source AI-First Design tool • Visually build, style, and edit your React App with AI

reacttypescripttailwindcssnextjslow-codedesignfrontenduifigmacursoridecursor-ai

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Artefaktenpmnpm install onlook

README

Onlook

The design tool for AI-native designers — now in early access.
Onlook makes designing on top of your codebase effortless. Craft exceptional experiences with AI in code.

→ Join the waitlist

👨‍💻👩‍💻👨‍💻 We're hiring engineers in SF! 👩‍💻👨‍💻👩‍💻

View Demo · Report Bug · Request Feature

This is the open-source visual editor that started Onlook (Next.js + Tailwind). The hosted product we're building next, for AI-native designers, is in early access via the waitlist above.

An Open-Source, Visual-First Code Editor

Craft websites, prototypes, and designs with AI in Next.js + TailwindCSS. Make edits directly in the browser DOM with a visual editor. Design in realtime with code. An open-source alternative to Bolt.new, Lovable, V0, Replit Agent, Figma Make, Webflow, etc.

What you can do with Onlook:

Create Next.js app in seconds
- Start from text or image
- Use prebuilt templates
Visually edit your app
- Use Figma-like UI
- Preview your app in real-time
- Manage brand assets and tokens
- Create and navigate to Pages
- Browse layers
- Manage project Images
- Detect and use Components – Previously in Onlook Desktop
- Drag-and-drop Components Panel
- Use Branching to experiment with designs
Development Tools
- Real-time code editor
- Save and restore from checkpoints
- Run commands via CLI
- Connect with app marketplace
Deploy your app in seconds
- Generate sharable links
- Link your custom domain
Collaborate with your team
- Real-time editing
- Leave comments
Advanced AI capabilities
- Queue multiple messages at once
- Use Images as references and as assets in a project
- Setup and use MCPs in projects
- Allow Onlook to use itself as a toolcall for branch creation and iteration
Advanced project support
- Support non-NextJS projects
- Support non-Tailwind projects

Onlook-GitHub-Example

Getting Started

Use our hosted app or run locally.

Usage

Onlook will run on any Next.js + TailwindCSS project, import your project into Onlook or start from scratch within the editor.

Use the AI chat to create or edit a project you're working on. At any time, you can always right-click an element to open up the exact location of the element in code.

Draw-in new divs and re-arrange them within their parent containers by dragging-and-dropping.

Preview the code side-by-side with your site design.

Use Onlook's editor toolbar to adjust Tailwind styles, directly manipulate objects, and experiment with layouts.

Documentation

For full documentation, visit docs.onlook.com

To see how to Contribute, visit Contributing to Onlook in our docs.

How it works

When you create an app, we load the code into a web container
The container runs and serves the code
Our editor receives the preview link and displays it in an iFrame
Our editor reads and indexes the code from the container
We instrument the code in order to map elements to their place in code
When the element is edited, we edit the element in our iFrame, then in code
Our AI chat also has code access and tools to understand and edit the code

This architecture can theoretically scale to any language or framework that displays DOM elements declaratively (e.g. jsx/tsx/html). We are focused on making it work well with Next.js and TailwindCSS for now.

For a full walkthrough, check out our Architecture Docs.