[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Page](./puppeteer.protocol.page.md) > [StartScreencastRequest](./puppeteer.protocol.page.startscreencastrequest.md) > [format](./puppeteer.protocol.page.startscreencastrequest.format.md) ## Protocol.Page.StartScreencastRequest.format property Image compression format. (StartScreencastRequestFormat enum) Signature: ```typescript format?: ('jpeg' | 'png'); ```