Plugin for adding custom converters from one resource format to another in the editor resource picker context menu; for example, converting a [StandardMaterial3D] to a [ShaderMaterial]. [EditorResourceConversionPlugin] is invoked when the context menu is brought up for a resource in the editor inspector. Relevant conversion plugins will appear as menu options to convert the given resource to a target type. Below shows an example of a basic plugin that will convert an [ImageTexture] to a [PortableCompressedTexture2D]. [codeblocks] [gdscript] extends EditorResourceConversionPlugin func _handles(resource: Resource): return resource is ImageTexture func _converts_to(): return "PortableCompressedTexture2D" func _convert(itex: Resource): var ptex = PortableCompressedTexture2D.new() ptex.create_from_image(itex.get_image(), PortableCompressedTexture2D.COMPRESSION_MODE_LOSSLESS) return ptex [/gdscript] [/codeblocks] To use an [EditorResourceConversionPlugin], register it using the [method EditorPlugin.add_resource_conversion_plugin] method first. Takes an input [Resource] and converts it to the type given in [method _converts_to]. The returned [Resource] is the result of the conversion, and the input [Resource] remains unchanged. Returns the class name of the target type of [Resource] that this plugin converts source resources to. Called to determine whether a particular [Resource] can be converted to the target resource type by this plugin.