> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# ImageGenerationRequestOutputFormat

Encoding of the returned image bytes. Most models produce raster formats (png, jpeg, webp). SVG is supported by vectorization models (e.g. Quiver) — the SVG markup is UTF-8 base64-encoded in `b64_json`.

## Example Usage

```typescript theme={null}
import { ImageGenerationRequestOutputFormat } from "@openrouter/sdk/models";

let value: ImageGenerationRequestOutputFormat = "png";

// Open enum: unrecognized values are captured as Unrecognized<string>
```

## Values

```typescript theme={null}
"png" | "jpeg" | "webp" | "svg" | Unrecognized<string>
```