---
title: pathExtension
framework: foundation
role: symbol
role_heading: Instance Property
path: foundation/nsstring/pathextension
---

# pathExtension

The path extension, if any, of the string as interpreted as a path.

## Declaration

```swift
var pathExtension: String { get }
```

## Discussion

Discussion The path extension is the portion of the last path component which follows the final period, if there is one. The extension divider is not included. The following table illustrates the effect of pathExtension on a variety of different paths:  |   |   |   |   |   |  Note that this method only works with file paths (not, for example, string representations of URLs).

## See Also

### Working with Paths

- [path(withComponents:)](foundation/nsstring/path(withcomponents:).md)
- [pathComponents](foundation/nsstring/pathcomponents.md)
- [completePath(into:caseSensitive:matchesInto:filterTypes:)](foundation/nsstring/completepath(into:casesensitive:matchesinto:filtertypes:).md)
- [fileSystemRepresentation](foundation/nsstring/filesystemrepresentation.md)
- [getFileSystemRepresentation(_:maxLength:)](foundation/nsstring/getfilesystemrepresentation(_:maxlength:).md)
- [isAbsolutePath](foundation/nsstring/isabsolutepath.md)
- [lastPathComponent](foundation/nsstring/lastpathcomponent.md)
- [abbreviatingWithTildeInPath](foundation/nsstring/abbreviatingwithtildeinpath.md)
- [appendingPathComponent(_:)](foundation/nsstring/appendingpathcomponent(_:).md)
- [appendingPathExtension(_:)](foundation/nsstring/appendingpathextension(_:).md)
- [deletingLastPathComponent](foundation/nsstring/deletinglastpathcomponent.md)
- [deletingPathExtension](foundation/nsstring/deletingpathextension.md)
- [expandingTildeInPath](foundation/nsstring/expandingtildeinpath.md)
- [resolvingSymlinksInPath](foundation/nsstring/resolvingsymlinksinpath.md)
- [standardizingPath](foundation/nsstring/standardizingpath.md)