[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Debugger](./puppeteer.protocol.debugger.md) > [SetBreakpointByUrlRequest](./puppeteer.protocol.debugger.setbreakpointbyurlrequest.md) > [urlRegex](./puppeteer.protocol.debugger.setbreakpointbyurlrequest.urlregex.md) ## Protocol.Debugger.SetBreakpointByUrlRequest.urlRegex property Regex pattern for the URLs of the resources to set breakpoints on. Either `url` or `urlRegex` must be specified. Signature: ```typescript urlRegex?: string; ```