puppeteer/docs/api/puppeteer.page.metrics.md

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---
sidebar_label: Page.metrics
---
# Page.metrics() method
Object containing metrics as key/value pairs.
#### Signature:
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```typescript
class Page {
metrics(): Promise<Metrics>;
}
```
**Returns:**
Promise&lt;[Metrics](./puppeteer.metrics.md)&gt;
- `Timestamp` : The timestamp when the metrics sample was taken.
- `Documents` : Number of documents in the page.
- `Frames` : Number of frames in the page.
- `JSEventListeners` : Number of events in the page.
- `Nodes` : Number of DOM nodes in the page.
- `LayoutCount` : Total number of full or partial page layout.
- `RecalcStyleCount` : Total number of page style recalculations.
- `LayoutDuration` : Combined durations of all page layouts.
- `RecalcStyleDuration` : Combined duration of all page style recalculations.
- `ScriptDuration` : Combined duration of JavaScript execution.
- `TaskDuration` : Combined duration of all tasks performed by the browser.
- `JSHeapUsedSize` : Used JavaScript heap size.
- `JSHeapTotalSize` : Total JavaScript heap size.
## Remarks
All timestamps are in monotonic time: monotonically increasing time in seconds since an arbitrary point in the past.