<!--
{
  "availability" : [
    "iOS: 13.0.0 -",
    "iPadOS: 13.0.0 -",
    "macCatalyst: -",
    "macOS: 10.15.0 -",
    "tvOS: 13.0.0 -",
    "visionOS: -",
    "watchOS: 6.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "Compression",
  "identifier" : "/documentation/Compression/FilterOperation",
  "metadataVersion" : "0.1.0",
  "role" : "Enumeration",
  "symbol" : {
    "kind" : "Enumeration",
    "modules" : [
      "Compression"
    ],
    "preciseIdentifier" : "s:11Compression15FilterOperationO"
  },
  "title" : "FilterOperation"
}
-->

# FilterOperation

Operations that define whether input and output filters compress or decompress data.

```
enum FilterOperation
```

## Topics

### Enumeration Cases

[`case compress`](/documentation/Compression/FilterOperation/compress)

An operation that compresses data.

[`case decompress`](/documentation/Compression/FilterOperation/decompress)

An operation that decompresses data.

## Relationships

### Conforms To

[`RawRepresentable`](/documentation/Swift/RawRepresentable)

[`Hashable`](/documentation/Swift/Hashable)

[`Equatable`](/documentation/Swift/Equatable)

---

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)