GitHub - serhack/pdf-diff: A tool for visualizing differences between two pdf files.

“pdf-diff” is a tool that uses the Go programming language to create images showcasing the differences between two PDF files. It’s mainly designed for use by editors who work with large volumes of PDF content. The tool operates by first converting the PDFs into a series of images using pdftoppm, then uses a simple pixel comparison algorithm to highlight any changes between the images. These images are placed in a folder named after the hash of the content of the PDF files. The author of the tool, serhack, is open to feedback and improvements, and has provided their contact information for those interested in discussing further collaboration or donating to support the project.