> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://developers.synthesia.io/docs/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://developers.synthesia.io/docs/_mcp/server.

## Localization API

* The [**Localization API**](/docs/localization-api-introduction) lets you localize your videos into up to 20 languages per request. Create a localization from a video URL, choose your target languages, follow each language until its localized video is ready, and add more languages later. See the [API reference](/docs/api-reference/localization).
* `/v2/dubbing` is deprecated in favour of the Localization API, except creating a dubbing project from an uploaded asset. There's no removal date yet. See [Coming from `/v2/dubbing`](/docs/localization-api-introduction#coming-from-v2dubbing).