[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Fetch](./puppeteer.protocol.fetch.md) > [FulfillRequestRequest](./puppeteer.protocol.fetch.fulfillrequestrequest.md) > [binaryResponseHeaders](./puppeteer.protocol.fetch.fulfillrequestrequest.binaryresponseheaders.md) ## Protocol.Fetch.FulfillRequestRequest.binaryResponseHeaders property Alternative way of specifying response headers as a \\0-separated series of name: value pairs. Prefer the above method unless you need to represent some non-UTF8 values that can't be transmitted over the protocol as text. Signature: ```typescript binaryResponseHeaders?: string; ```