# `CompressZ`

*Function*

## Declaration

```swift
func CompressZ(_ sourceData: Data) -> Data
```

```objc
NSData *CompressZ(NSData *sourceData);
```

```python
CompressZ(sourceData: bytes) -> bytes
```

## See Also

### Data and Source Processing

- [`DecompressZ`](/Core/GlyphsCore/DecompressZ)
- [`GSRemoveComments`](/Core/GlyphsCore/GSRemoveComments)