---
title: kCGImagePropertyPNGWarning
framework: imageio
role: symbol
role_heading: Global Variable
path: imageio/kcgimagepropertypngwarning
---

# kCGImagePropertyPNGWarning

A warning string.

## Declaration

```swift
let kCGImagePropertyPNGWarning: CFString
```

## See Also

### Descriptive Information

- [kCGImagePropertyPNGTitle](imageio/kcgimagepropertypngtitle.md)
- [kCGImagePropertyPNGDescription](imageio/kcgimagepropertypngdescription.md)
- [kCGImagePropertyPNGComment](imageio/kcgimagepropertypngcomment.md)
- [kCGImagePropertyPNGDisclaimer](imageio/kcgimagepropertypngdisclaimer.md)
- [kCGImagePropertyPNGAuthor](imageio/kcgimagepropertypngauthor.md)
- [kCGImagePropertyPNGCopyright](imageio/kcgimagepropertypngcopyright.md)
- [kCGImagePropertyPNGCreationTime](imageio/kcgimagepropertypngcreationtime.md)
- [kCGImagePropertyPNGModificationTime](imageio/kcgimagepropertypngmodificationtime.md)
- [kCGImagePropertyPNGSoftware](imageio/kcgimagepropertypngsoftware.md)