<!--
{
  "availability" : [
    "iOS: 18.4.0 -",
    "iPadOS: 18.4.0 -",
    "macCatalyst: 18.4.0 -",
    "macOS: 15.4.0 -",
    "visionOS: 2.4.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "WebKit",
  "identifier" : "/documentation/WebKit/WKWebExtension/DataType",
  "metadataVersion" : "0.1.0",
  "role" : "Structure",
  "symbol" : {
    "kind" : "Structure",
    "modules" : [
      "WebKit"
    ],
    "preciseIdentifier" : "c:@T@WKWebExtensionDataType"
  },
  "title" : "WKWebExtension.DataType"
}
-->

# WKWebExtension.DataType

Constants for specifying data types for a [`WKWebExtension.DataRecord`](/documentation/WebKit/WKWebExtension/DataRecord).

```
struct DataType
```

## Topics

### Constants

[`local`](/documentation/WebKit/WKWebExtension/DataType/local)

Specifies local storage, including `browser.storage.local`.

[`session`](/documentation/WebKit/WKWebExtension/DataType/session)

Specifies session storage, including `browser.storage.session`.

[`synchronized`](/documentation/WebKit/WKWebExtension/DataType/synchronized)

Specifies synchronized storage, including `browser.storage.sync`.


---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)