bolt.new gives you a browser workspace that writes code, installs dependencies and runs a preview: describe the need and it generates project structure, frontend and backend code, reflects changes in the preview, and still lets you edit files. It is smoothest for prototypes and demos because local setup disappears. Complex logic and legacy context do not fit; review generated code like external code, watch key handling and dependency sources, and take it local before launch.
What it does
- Generate and preview in the browser with no local setup
- Chat-driven changes plus manual file editing
- A full skeleton with frontend, backend and data config
- Download code or sync to a repo to continue
- Fix runtime errors in the same interface
Who it is for
- An idea that needs a clickable page and data flow
- Demos for clients or colleagues without environment setup
- Landing pages, event pages and small internal tools
- Quickly validating whether a technical approach works
How to get started
- Describe page, data and interaction in the first prompt instead of leaving it open
- Run the main flow first, then fix errors step by step
- Download before launch and check dependencies, keys and data sources
