[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [ApplicationCache](./puppeteer.protocol.applicationcache.md) > [FrameWithManifest](./puppeteer.protocol.applicationcache.framewithmanifest.md) > [frameId](./puppeteer.protocol.applicationcache.framewithmanifest.frameid.md) ## Protocol.ApplicationCache.FrameWithManifest.frameId property Frame identifier. Signature: ```typescript frameId: Page.FrameId; ```