[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Page](./puppeteer.protocol.page.md) > [SetDeviceMetricsOverrideRequest](./puppeteer.protocol.page.setdevicemetricsoverriderequest.md) > [viewport](./puppeteer.protocol.page.setdevicemetricsoverriderequest.viewport.md) ## Protocol.Page.SetDeviceMetricsOverrideRequest.viewport property The viewport dimensions and scale. If not set, the override is cleared. Signature: ```typescript viewport?: Viewport; ```