---
title: "CFURLCopyPathExtension(_:)"
framework: corefoundation
role: symbol
role_heading: Function
path: "corefoundation/cfurlcopypathextension(_:)"
---

# CFURLCopyPathExtension(_:)

Returns the path extension of a given URL.

## Declaration

```swift
func CFURLCopyPathExtension(_ url: CFURL!) -> CFString!
```

## Parameters

- `url`: The CFURL object to examine.

## Return Value

Return Value The path extension of url, or NULL if no extension exists. Ownership follows the create rule. See The Create Rule.

## Discussion

Discussion The path extension is the portion of the last path component which follows the final period, if there is one. For example, for http:/www.apple.com/developer/macosx.today.html, the extension is html, and for http:/www.apple.com/developer, there is no path extension. See also CFURLCopyLastPathComponent(_:).

## See Also

### Accessing the Parts of a URL

- [CFURLCanBeDecomposed(_:)](corefoundation/cfurlcanbedecomposed(_:).md)
- [CFURLCopyFileSystemPath(_:_:)](corefoundation/cfurlcopyfilesystempath(_:_:).md)
- [CFURLCopyFragment(_:_:)](corefoundation/cfurlcopyfragment(_:_:).md)
- [CFURLCopyHostName(_:)](corefoundation/cfurlcopyhostname(_:).md)
- [CFURLCopyLastPathComponent(_:)](corefoundation/cfurlcopylastpathcomponent(_:).md)
- [CFURLCopyNetLocation(_:)](corefoundation/cfurlcopynetlocation(_:).md)
- [CFURLCopyParameterString(_:_:)](corefoundation/cfurlcopyparameterstring(_:_:).md)
- [CFURLCopyPassword(_:)](corefoundation/cfurlcopypassword(_:).md)
- [CFURLCopyPath(_:)](corefoundation/cfurlcopypath(_:).md)
- [CFURLCopyQueryString(_:_:)](corefoundation/cfurlcopyquerystring(_:_:).md)
- [CFURLCopyResourceSpecifier(_:)](corefoundation/cfurlcopyresourcespecifier(_:).md)
- [CFURLCopyScheme(_:)](corefoundation/cfurlcopyscheme(_:).md)
- [CFURLCopyStrictPath(_:_:)](corefoundation/cfurlcopystrictpath(_:_:).md)
- [CFURLCopyUserName(_:)](corefoundation/cfurlcopyusername(_:).md)
- [CFURLGetPortNumber(_:)](corefoundation/cfurlgetportnumber(_:).md)