---
url: >-
  https://adk.nht.io/api/@nhtio/adk/batteries/generation/transformers_js/helpers/functions/rawImageToEncodedBytes.md
---

# Function: rawImageToEncodedBytes()

```ts
function rawImageToEncodedBytes(
  image: RawImageLike,
  encodeImage?: (image: RawImageLike) => Promise<Uint8Array<ArrayBufferLike>>,
): Promise<Uint8Array<ArrayBufferLike>>;
```

Defined in: [src/batteries/generation/transformers\_js/helpers.ts:57](https://github.com/NHTIO/ADK/blob/v1.20260713.1/src/src/batteries/generation/transformers_js/helpers.ts#L57)

Encodes a resolved `RawImage`-like value to PNG bytes.

## Parameters

| Parameter      | Type                                                                                                         | Description                                                                        |
| -------------- | ------------------------------------------------------------------------------------------------------------ | ---------------------------------------------------------------------------------- |
| `image`        | [`RawImageLike`](../interfaces/RawImageLike.md)                                                              | The `RawImage`-like value to encode (one element of `generate_images()`'s result). |
| `encodeImage?` | (`image`: [`RawImageLike`](../interfaces/RawImageLike.md)) => `Promise`<`Uint8Array`<`ArrayBufferLike`>> | Optional override that fully replaces the env-branch.                              |

## Returns

`Promise`<`Uint8Array`<`ArrayBufferLike`>>

The encoded PNG bytes.

## Remarks

When `encodeImage` is supplied it takes over entirely — the primary hermetic-test seam, since a
fake `RawImage` double need not implement `toBlob`/`toSharp` at all. Otherwise this picks the
browser (`toBlob`) or Node (`toSharp`) path by a local environment probe, falling back to whichever
method is actually present on `image` if the probe disagrees with reality (e.g. a web worker with
neither `window` nor `document`, but a `toBlob`-only `RawImage`).