Add a Background Image or Watermark to a PDF Form

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SurveyJS PDF Generator allows you to customize your PDF forms by adding images and annotations. For example, you can apply a branded background to match your design language.

To add a background image, handle the onRenderHeader event raised by the SurveyPDF object. An event handler accepts a DrawCanvas object as the second parameter. Use its drawImage() method to render an image. If this image should occupy an entire PDF page, use the rect property to specify the drawing area as shown in the code listing.

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