---
title: WKWebExtension
framework: webkit
role: symbol
role_heading: Class
path: webkit/wkwebextension
---

# WKWebExtension

An object that encapsulates a web extension’s resources that the manifest file defines.

## Declaration

```swift
@MainActor class WKWebExtension
```

## Overview

Overview This class reads and parses the manifest.json file along with the supporting resources like icons and localizations.

## Topics

### Classes

- [WKWebExtension.Action](webkit/wkwebextension/action.md)
- [WKWebExtension.Command](webkit/wkwebextension/command.md)
- [WKWebExtension.DataRecord](webkit/wkwebextension/datarecord.md)
- [WKWebExtension.MatchPattern](webkit/wkwebextension/matchpattern.md)
- [WKWebExtension.MessagePort](webkit/wkwebextension/messageport.md)
- [WKWebExtension.TabConfiguration](webkit/wkwebextension/tabconfiguration.md)
- [WKWebExtension.WindowConfiguration](webkit/wkwebextension/windowconfiguration.md)
- [WKWebExtensionController.Configuration](webkit/wkwebextensioncontroller/configuration-swift.class.md)

### Structures

- [WKWebExtension.DataType](webkit/wkwebextension/datatype.md)
- [WKWebExtension.Error](webkit/wkwebextension/error.md)
- [WKWebExtension.Permission](webkit/wkwebextension/permission.md)
- [WKWebExtension.TabChangedProperties](webkit/wkwebextension/tabchangedproperties.md)

### Enumerations

- [WKWebExtension.WindowState](webkit/wkwebextension/windowstate.md)
- [WKWebExtension.WindowType](webkit/wkwebextension/windowtype.md)

### Initializers

- [init(appExtensionBundle:)](webkit/wkwebextension/init(appextensionbundle:).md)
- [init(resourceBaseURL:)](webkit/wkwebextension/init(resourcebaseurl:).md)

### Instance Properties

- [allRequestedMatchPatterns](webkit/wkwebextension/allrequestedmatchpatterns.md)
- [defaultLocale](webkit/wkwebextension/defaultlocale.md)
- [displayActionLabel](webkit/wkwebextension/displayactionlabel.md)
- [displayDescription](webkit/wkwebextension/displaydescription.md)
- [displayName](webkit/wkwebextension/displayname.md)
- [displayShortName](webkit/wkwebextension/displayshortname.md)
- [displayVersion](webkit/wkwebextension/displayversion.md)
- [errors](webkit/wkwebextension/errors.md)
- [hasBackgroundContent](webkit/wkwebextension/hasbackgroundcontent.md)
- [hasCommands](webkit/wkwebextension/hascommands.md)
- [hasContentModificationRules](webkit/wkwebextension/hascontentmodificationrules.md)
- [hasInjectedContent](webkit/wkwebextension/hasinjectedcontent.md)
- [hasOptionsPage](webkit/wkwebextension/hasoptionspage.md)
- [hasOverrideNewTabPage](webkit/wkwebextension/hasoverridenewtabpage.md)
- [hasPersistentBackgroundContent](webkit/wkwebextension/haspersistentbackgroundcontent.md)
- [manifest](webkit/wkwebextension/manifest.md)
- [manifestVersion](webkit/wkwebextension/manifestversion.md)
- [optionalPermissionMatchPatterns](webkit/wkwebextension/optionalpermissionmatchpatterns.md)
- [optionalPermissions](webkit/wkwebextension/optionalpermissions.md)
- [requestedPermissionMatchPatterns](webkit/wkwebextension/requestedpermissionmatchpatterns.md)
- [requestedPermissions](webkit/wkwebextension/requestedpermissions.md)
- [version](webkit/wkwebextension/version.md)

### Instance Methods

- [actionIcon(for:)](webkit/wkwebextension/actionicon(for:).md)
- [icon(for:)](webkit/wkwebextension/icon(for:).md)
- [supportsManifestVersion(_:)](webkit/wkwebextension/supportsmanifestversion(_:).md)

## Relationships

### Inherits From

- [NSObject](objectivec/nsobject-swift.class.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)
- [Sendable](swift/sendable.md)

## See Also

### Web extensions

- [WKWebExtensionTab](webkit/wkwebextensiontab.md)
- [WKWebExtensionWindow](webkit/wkwebextensionwindow.md)
- [WKWebExtensionContext](webkit/wkwebextensioncontext.md)
- [WKWebExtensionController](webkit/wkwebextensioncontroller.md)
- [WKWebExtensionControllerDelegate](webkit/wkwebextensioncontrollerdelegate.md)