Features
Real-time HTML and React preview inside ChatGPT
Full Tailwind CSS support with accurate rendering
Instant feedback loop without leaving ChatGPT
Unlimited messages and chat groups (paid plans)
5 device activations per license
Priority email support (paid plans)
Works with any ChatGPT conversation
Chrome browser extension only
Recommended prompts for TailwindCSS UI generation
Clean preview output (no code comments)
Image generation guidance via picsum.photos
Bootstrap Icons via CDN in prompts
Free forever basic tier (latest 5 messages)
React.js code preview (since v2024.01.18)
Open-source alternative to v0.dev
Drag-and-drop visual canvas with code layer mapping
AI page, theme, and component generation from prompts
Responsive auto-layout with mobile support
Multiplayer real-time collaboration with layer comments
Design system with props, slots, and variants
Export clean front-end code without AI use
CLI sync via `npx @subframe/cli sync`
AI remix variations and @mention context
Integration with Cursor and Claude Code via MCP + Skills
24-hour version history (Free), 7-day (Pro)
Personalized AI that learns your components and style
Prototype with code and annotated designs
Unlimited team members on all plans
Free viewer seats included
