> ## Documentation Index
> Fetch the complete documentation index at: https://docs.extractbase.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Performance

Performance metrics collected from the page using the native Performance API.
Contains arrays of PerformanceEntry objects organized by entry type.

## Definition

```graphql theme={null}
object Performance {
  navigation: [JSONObject]
  resource: [JSONObject]
  paint: [JSONObject]
  measure: [JSONObject]
  mark: [JSONObject]
  layoutShift: [JSONObject]
  largestContentfulPaint: [JSONObject]
  firstInput: [JSONObject]
  longtask: [JSONObject]
  memory: JSONObject
}
```

## Fields

### `navigation`

[\[JSONObject\]](/reference/graphql/scalars/jsonobject)

Navigation timing entries

### `resource`

[\[JSONObject\]](/reference/graphql/scalars/jsonobject)

Resource timing entries

### `paint`

[\[JSONObject\]](/reference/graphql/scalars/jsonobject)

Paint timing entries

### `measure`

[\[JSONObject\]](/reference/graphql/scalars/jsonobject)

User-defined performance measures

### `mark`

[\[JSONObject\]](/reference/graphql/scalars/jsonobject)

User-defined performance marks

### `layoutShift`

[\[JSONObject\]](/reference/graphql/scalars/jsonobject)

Layout shift entries for measuring CLS

### `largestContentfulPaint`

[\[JSONObject\]](/reference/graphql/scalars/jsonobject)

Largest Contentful Paint entries

### `firstInput`

[\[JSONObject\]](/reference/graphql/scalars/jsonobject)

First Input Delay entries

### `longtask`

[\[JSONObject\]](/reference/graphql/scalars/jsonobject)

Long task entries

### `memory`

[JSONObject](/reference/graphql/scalars/jsonobject)

Chrome memory usage information