[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [CSS](./puppeteer.protocol.css.md) > [CSSStyleSheetHeader](./puppeteer.protocol.css.cssstylesheetheader.md) > [sourceURL](./puppeteer.protocol.css.cssstylesheetheader.sourceurl.md) ## Protocol.CSS.CSSStyleSheetHeader.sourceURL property Stylesheet resource URL. Signature: ```typescript sourceURL: string; ```