How to merge|replace images into a PDF document via itextpdf lib in Java

In my previous post, I guided how to find all the images that are signatures place holders. In this post, I will tell how to replace or merge them with your fancy signature image. First, you need to prepare your fancy signature image. You can try with: https://www.sign.plus/online-signature-generator And create a BufferedImage from your signature. In the RenderListener implementation, we detected the image object that might be the signature place holder. Then 4 steps need to be done to merge

Post, Code and Quiet Time. How to merge|replace images into a PDF document via itextpdf lib in Java By Errong Leng – 15 Feb 2023 – View online → Photo by Lewis Keegan / Unsplash In my previous post, I guided how to find all the images that are signatures place holders. In this post, I will tell how to replace or merge them with your fancy signature image. First, you need to prepare your fancy signature image. You can try with: https://www.sign.plus/online-signature-generator And create a BufferedImage from your signature. In the RenderListener implementation, we detected the image object that might be the signature place holder. Then 4 steps need to be done to merge your fancy contract. PdfReader::killIndirect, remove the connection com.itextpdf.text.Image::getInstance(bufferedImage) create a new mask Image PdfWriter writer = pdfStamper.getWriter(); create indirect connection with the new signature image PdfReader.killIndirect(currentImg); BufferedImage bufferedImage = ImageIO .read(new ByteArrayInputStream(imageBytes)); if (bufferedImage != null) { Image signatureImage = Image.getInstance(bufferedImage, null); Image maskImage = signatureImage.getImageMask(); if (maskImage != null) { log.error("maskImage {}", maskImage.getAbsoluteX()); writer.addDirectImageSimple(maskImage); } signatureImage.scaleToFit(targetWidth.floatValue(), targetHeight.floatValue()); writer.addDirectImageSimple(signatureImage, (PRIndirectReference) obj); } Apply signatures programiclly via itextpdf Post, Code and Quiet Time. © 2023 – Unsubscribe