# Generate interactive API documentation from OpenAPI definitions
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**This is the README for the `2.x` version of Redoc (React-based).**
**The README for the `1.x` version is on the [v1.x](https://github.com/Redocly/redoc/tree/v1.x) branch**
## About Redoc
Redoc is an open-source tool for generating documentation from OpenAPI (fka Swagger) definitions.
By default Redoc offers a three-panel, responsive layout:
- The left panel contains a search bar and navigation menu.
- The central panel contains the documentation.
- The right panel contains request and response examples.
![Redoc demo](https://raw.githubusercontent.com/Redocly/redoc/master/demo/redoc-demo.png)
## Live demo
If you want to see how Redoc will render your OpenAPI definition,
you can try it out online at https://redocly.github.io/redoc/.
A version of the Swagger Petstore API is displayed by default.
To test it with your own OpenAPI definition,
enter the URL for your definition and select **TRY IT**.
## Redoc vs. Reference vs. Portals
Redoc is Redocly's community-edition product. Looking for something more?
Checkout the following feature comparison of Redocly's premium products versus Redoc:
| Features | Redoc | Reference | Portals |
|------------------------------|:---------:|:---------:|:-----------:|
| **Specs** | | | |
| Swagger 2.0 | √ | √ | √ |
| OpenAPI 3.0 | √ | √ | √ |
| OpenAPI 3.1 | √ (basic) | √ | √ |
| | | | |
| **Theming** | | | |
| Fonts/colors | √ | √ | √ |
| Extra theme options | | √ | √ |
| | | | |
| **Performance** | | | |
| Pagination | | √ | √ |
| Search (enhanced) | | √ | √ |
| Search (server-side) | | | √ |
| | | | |
| **Multiple APIs** | | | |
| Multiple versions | | √ | √ |
| Multiple APIs | | | √ |
| API catalog | | | √ |
| | | | |
| **Additional features** | | | |
| Try-it console | | √ | √ |
| Automated code samples | | √ | √ |
| Deep links | | √ | √ |
| More SEO control | | | √ |
| Contextual docs | | | √ |
| Landing pages | | | √ |
| React hooks for more control | | | √ |
| Personalization | | | √ |
| Analytics integrations | | | √ |
| Feedback | | | Coming Soon |
Refer to the Redocly's documentation for more information on these products:
- [Portals](https://redoc.ly/docs/developer-portal/introduction/)
- [Reference](https://redoc.ly/docs/api-reference-docs/getting-started/)
- [Redoc](https://redoc.ly/docs/redoc/quickstart/intro/)
## Features
- Responsive three-panel design with menu/scrolling synchronization
- [Multiple deployment options](https://redoc.ly/docs/redoc/quickstart/intro/)
- [Server-side rendering (SSR) ready](https://redoc.ly/docs/redoc/quickstart/cli/#redoc-cli-commands)
- Ability to integrate your API introduction into the side menu
- [Simple integration with `create-react-app`](https://redoc.ly/docs/redoc/quickstart/react/)
[Example repo](https://github.com/APIs-guru/create-react-app-redoc)
- [Command-line interface to bundle your docs into a **zero-dependency** HTML file](https://redoc.ly/docs/redoc/quickstart/cli/)
- Neat **interactive** documentation for nested objects