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

# Backend SDK

- [Python](https://docs.acrcloud.com/sdk-reference/backend-sdk/python.md)
- [PHP](https://docs.acrcloud.com/sdk-reference/backend-sdk/php.md)
- [Go](https://docs.acrcloud.com/sdk-reference/backend-sdk/go.md): Go SDK installation and usage
- [Java](https://docs.acrcloud.com/sdk-reference/backend-sdk/java.md)
- [C/C++](https://docs.acrcloud.com/sdk-reference/backend-sdk/c-c++.md)
- [C#](https://docs.acrcloud.com/sdk-reference/backend-sdk/c_sharp.md)