---
title: "supportsManifestVersion(_:)"
framework: webkit
role: symbol
role_heading: Instance Method
path: "webkit/wkwebextension/supportsmanifestversion(_:)"
---

# supportsManifestVersion(_:)

Checks if a manifest version is supported by the extension.

## Declaration

```swift
func supportsManifestVersion(_ manifestVersion: Double) -> Bool
```

## Parameters

- `manifestVersion`: The version number to check.

## Return Value

Return Value Returns YES if the extension specified a manifest version that is greater than or equal to manifestVersion.