[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [HeadlessExperimental](./puppeteer.protocol.headlessexperimental.md) > [ScreenshotParams](./puppeteer.protocol.headlessexperimental.screenshotparams.md) > [format](./puppeteer.protocol.headlessexperimental.screenshotparams.format.md) ## Protocol.HeadlessExperimental.ScreenshotParams.format property Image compression format (defaults to png). (ScreenshotParamsFormat enum) Signature: ```typescript format?: ('jpeg' | 'png'); ```