[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Runtime](./puppeteer.protocol.runtime.md) > [GetHeapUsageResponse](./puppeteer.protocol.runtime.getheapusageresponse.md) ## Protocol.Runtime.GetHeapUsageResponse interface Signature: ```typescript export interface GetHeapUsageResponse ``` ## Properties | Property | Type | Description | | --- | --- | --- | | [totalSize](./puppeteer.protocol.runtime.getheapusageresponse.totalsize.md) | number | Allocated heap size in bytes. | | [usedSize](./puppeteer.protocol.runtime.getheapusageresponse.usedsize.md) | number | Used heap size in bytes. |