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Creating stamp annotations using JavaScript

Stamp annotations can be created from an image as a data URI. The key property for stamps is ImageData which you set with the value of your data URI. For example:

const stampAnnot = new Annotations.StampAnnotation();
stampAnnot.PageNumber = 1;
stampAnnot.X = 100;
stampAnnot.Y = 250;
stampAnnot.Width = 275;
stampAnnot.Height = 40;
// put your data URI here
stampAnnot.ImageData = 'data:image/png;base64,iVBOR....';
stampAnnot.Author = annotManager.getCurrentUser();

annotManager.addAnnotation(stampAnnot);
annotManager.redrawAnnotation(stampAnnot);

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