This article describes the process to change image in PDF using C#. It has information to set the IDE, a list of steps, and a sample code demonstrating how to replace image in PDF using C#. All the necessary techniques will be discussed and demonstrated to clarify the feature.

Steps to Replace Image in PDF using C#

1. Set the environment to use Aspose.PDF for .NET to replace an image in a PDF
2. Apply the license to enable full product features
3. Load the source PDF file into the Document object to update the image
4. Create the absorber object to find the image placements in PDF pages
5. Parse through each page in the PDF and locate all images using the absorber
6. Loop through each image and replace it with the new image stream
7. Save the updated PDF file with new images

The above steps summarize how to change image in PDF using C#. Commence the process by loading the source PDF file, locating all the images in the loaded PDF pages using the ImagePlacementAbsorber, and parsing through each image. Load the new image into the memory stream and replace the existing image contents with it wherever required.

Code to Edit Image in PDF using C#

Use this code to replace images in PDF. If you get the absorber.ImagePlacements.Count == 0, skip the processing entirely for that page. You may load the unique input images at once and use them while replacing the existing images repeatedly, instead of loading them again and again.

This article explains how to remove an existing image and place a new image in the same place. To convert a PDF to MP4, refer to the article Convert PDF to MP4 using C#.