Railo 4.2 Reference
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Writes a image to the specified filename or destination.


imagewrite(any name,[string destination,[number quality,[boolean overwrite]]]):void


The arguments for this function are set. You can not use other arguments except the following ones.
Name Type Required Description
name any  Yes The image on which this operation is performed.  
destination string  No The path to write the file.

If you create the image with the ImageNew function or another operation where you do not specify the filename, specify the destination parameter.
The file format is derived from the extension of the filename. The default value for this parameter is the filename of the original image source.  
quality number  No Defines the JPEG quality used to encode the image. This parameter applies only to destination files with an extension of JPG or JPEG. Valid values are fractions that range from 0 through 1 (the lower the number, the lower the quality). The default value is 0.75.  
overwrite boolean  No If set to true (default), overwrites the destination file.