[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [LayerTree](./puppeteer.protocol.layertree.md) > [Layer](./puppeteer.protocol.layertree.layer.md) > [layerId](./puppeteer.protocol.layertree.layer.layerid.md) ## Protocol.LayerTree.Layer.layerId property The unique id for this layer. Signature: ```typescript layerId: LayerId; ```