We needed the ability to merge PDF files and the tool that we found was Aspose.PDF. It worked like a dream merging PDF files, but then we realized how much additional functionality the tool had to both resize and rotate images. We decided to replace all of our previous code with code using Aspose.PDF. It's easy to use, logistically laid out, and there is so much excellent support available.

Our code base has also become much cleaner and therefore easier to support and maintain. We highly recommend using Aspose.PDF, it really is an excellent product.