GMImage.GetCompressType
-----------------------

Queries the compression type.

| Component | Version | macOS | Windows | Linux | Server | iOS SDK |
|---|---|---|---|---|---|---|
| [GraphicsMagick](component_GraphicsMagick.md) | [2.0](newinversion20.md) | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes |

MBS( "GMImage.GetCompressType"; ImageRef ) 

**MBS**( **"GMImage.GetCompressType";** /\* Queries the compression type. \*/  
**$ImageRef**) /\* The image reference number.e.g. 1 \*/ 

### Parameters

| Parameter | Description | Example |
|---|---|---|
| ImageRef | The image reference number. | 1 |

### Result

Returns a number.

### Description

Queries the compression type.  
UndefinedCompression = 0, NoCompression = 1, BZipCompression = 2, FaxCompression = 3, Group4Compression = 4, JPEGCompression = 5, LosslessJPEGCompression = 6, LZWCompression = 7, RLECompression = 8, ZipCompression = 9  
### Examples

Shows compression:

 Set Variable \[ $image ; Value: MBS ("[GMImage.NewFromFile](GMImageNewFromFile.md)"; "/Users/cs/Desktop/image4.png") \]   
Set Variable \[ $value ; Value: MBS ("GMImage.GetCompressType"; $image ) \]   
Show Custom Dialog \[ "Compress type" ; $value \]   
Set Variable \[ $r ; Value: MBS ("[GMImage.Release](GMImageRelease.md)"; $image ) \]  
### See also

- [GMImage.GetClassType](GMImageGetClassType.md)
- [GMImage.New](GMImageNew.md)
- [GMImage.NewFromFile](GMImageNewFromFile.md)
- [GMImage.Release](GMImageRelease.md)
- [GMImage.SetCompressType](GMImageSetCompressType.md)

This function checks for a license.

Created 18th August 2014 , last changed 17th April 2019

  
[GMImage.GetCompose](GMImageGetCompose.md) - [GMImage.GetDebug](GMImageGetDebug.md)

[HTML Version](GMImageGetCompressType.shtml)