[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Input](./puppeteer.protocol.input.md) > [SynthesizeTapGestureRequest](./puppeteer.protocol.input.synthesizetapgesturerequest.md) > [x](./puppeteer.protocol.input.synthesizetapgesturerequest.x.md) ## Protocol.Input.SynthesizeTapGestureRequest.x property X coordinate of the start of the gesture in CSS pixels. Signature: ```typescript x: number; ```