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GMImage.GetAttributesJSON

Queries all attributes as JSON.

Component Version macOS Windows Linux Server iOS SDK
GraphicsMagick 9.2 ✅ Yes ✅ Yes ✅ Yes ✅ Yes ✅ Yes
MBS( "GMImage.GetAttributesJSON"; ImageRef )   More

Parameters

Parameter Description Example
ImageRef The image reference number. 1

Result

Returns JSON object or error.

Description

Queries all attributes as JSON.
Only attributes created before are visible, so e.g. EXIF data may not yet be loaded and parsed.
e.g. for a PNG this may include the original color type and the bit depth:
{
"png:IHDR.color-type-orig":"4",
"png:IHDR.bit-depth-orig":"16"
}

For macOS and iOS, also see CGImageSource functions to read metadata like EXIF and IPTC. And also check MetaDataQuery.AttributesForFile function to get generic metadata.

Examples

Show attributes:

Set Variable [ $ImageRef ; Value: MBS("GMImage.NewFromFile"; "/Users/cs/Desktop/image2.png") ]
Show Custom Dialog [ "Attributes" ; MBS( "GMImage.GetAttributesJSON"; $ImageRef ) ]
Set Variable [ $r ; Value: MBS("GMImage.Release"; $ImageRef) ]

See also

Release notes

Blog Entries

This function checks for a license.

Created 18th April 2019, last changed 19th October 2023


GMImage.GetAttributeNames - GMImage.GetBackgroundColor

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