---
title: "ImageGenerationRequestBackground"
---

Background treatment. `transparent` requires an output_format that supports alpha (png or webp).

## Example Usage

```python
from openrouter.components import ImageGenerationRequestBackground

# Open enum: unrecognized values are captured as UnrecognizedStr
value: ImageGenerationRequestBackground = "auto"
```


## Values

This is an open enum. Unrecognized values will not fail type checks.

- `"auto"`
- `"transparent"`
- `"opaque"`