> For the complete documentation index, see [llms.txt](https://docs.january.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.january.ai/client-sdks/web-sdk/reference/compatibility.md).

# Compatibility and packaging

| Requirement                          | Support                                                                                                                                                |
| ------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Node.js, for installing and building | 22 or newer                                                                                                                                            |
| Modules                              | ESM only                                                                                                                                               |
| TypeScript target                    | ES2022                                                                                                                                                 |
| API calls from a browser             | A modern browser with Fetch, on an origin January has enabled ([Runtime and security boundaries](/client-sdks/web-sdk/concepts/runtime-boundaries.md)) |
| `preparePhotoScanImage`              | Browser image, canvas, `Blob`, and object-URL APIs                                                                                                     |
| Voice recording                      | A secure context with `getUserMedia` and `MediaRecorder`                                                                                               |
| Voice transcription                  | Browser speech recognition, where available                                                                                                            |
| Distribution                         | npm, [`@januaryai/web-sdk`](https://www.npmjs.com/package/@januaryai/web-sdk)                                                                          |
| Package contents                     | ESM JavaScript, TypeScript declarations, source maps, README, and license                                                                              |

The package is licensed under Apache 2.0.