How can I replace third image in one page?

[janacek]

Product: @pdftron/pdfnet-node@9.4.0

Product Version: @pdftron/pdfnet-node@9.4.0

Please give a brief summary of your issue:
How can I replace third image in one page? If I use page.getMediaBox(), this replace first image in page.

Please describe your issue and provide steps to reproduce it:
I use Node.js and use sample from PDFTron Systems Inc. | Documentation

Thx

[system]

Hello, I’m Ron, an automated tech support bot

While you wait for one of our customer support representatives to get back to you, please check out some of these documentation pages:

Guides:

• Cropping PDF pages on Cross-Platform (Core) - About cropping the page
• Create a blank document page on Cross-Platform (Core) - About creating a new blank page
• Write page content to PDF on Cross-Platform (Core)
• Code samples to create / generate PDFs on Cross-Platform (Core)

APIs:

• PDFDraw - public BufferedImage getBitmap (Page page, BufferedImage image)
• Class HTML2PDF
• PDFRasterizer - public void rasterize (Page page, int[] buffer, int width, int height, boolean demult, Matrix2D device_mtx, Rect clip)

Forums:

• Content Replacer increases file size
• How do I maintain small file size after PDF processing and page editing using PDFNet SDK?
• How do I replace an image in PDF?

[kmirsalehi]

Hi Ondřej,

You would need to use the following method by first finding the specific image and then replacing it. For more information please see the following links:
https://groups.google.com/g/pdfnet-sdk/c/oWlA10uDOdk/m/gzYUqCCDxeEJ

How to replace images if there is changes in the original one, and more than 1 reference in PDF doc?

To do so, traverse the page’s content as in the ElementEdit sample (https://www.pdftron.com/pdfnet/samplecode.html#ElementEdit). When you encounter the image in question (you can obtain the SDF object with Element.GetXObject()), you can create a new image with ElementBuilder (see https://www.pdftron.com/pdfnet/samplecode.html#AddImage) and add it in with ElementWriter. Ok, but, isn’t it so that if I create new image, I should provide information regarding howto put the new image, because …