puppeteer/new-docs/puppeteer.protocol.headlessexperimental.md
2020-07-13 14:01:35 +01:00

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[Home](./index.md) &gt; [puppeteer](./puppeteer.md) &gt; [Protocol](./puppeteer.protocol.md) &gt; [HeadlessExperimental](./puppeteer.protocol.headlessexperimental.md)
## Protocol.HeadlessExperimental namespace
This domain provides experimental commands only supported in headless mode.
<b>Signature:</b>
```typescript
export namespace HeadlessExperimental
```
## Interfaces
| Interface | Description |
| --- | --- |
| [BeginFrameRequest](./puppeteer.protocol.headlessexperimental.beginframerequest.md) | |
| [BeginFrameResponse](./puppeteer.protocol.headlessexperimental.beginframeresponse.md) | |
| [NeedsBeginFramesChangedEvent](./puppeteer.protocol.headlessexperimental.needsbeginframeschangedevent.md) | Issued when the target starts or stops needing BeginFrames. Deprecated. Issue beginFrame unconditionally instead and use result from beginFrame to detect whether the frames were suppressed. |
| [ScreenshotParams](./puppeteer.protocol.headlessexperimental.screenshotparams.md) | Encoding options for a screenshot. |