i2pdf is described as '(image to pdf) is a fast and compact application built to create Adobe PDF documents from a collection of images, typically scanned from a paper source or in form of digital photographs' and is a PDF Editor in the photos & graphics category. There are more than 50 alternatives to i2pdf for a variety of platforms, including Windows, Web-based, Mac, iPhone and iPad apps. The best i2pdf alternative is IrfanView. It's not free, so if you're looking for a free alternative, you could try IrfanView or PDF24 Creator. Other great apps like i2pdf are PDFCreator, Preview, PDF24 Tools and Nitro PDF .
PDFill converts images to PDF plus it provides almost every tool you may happen to need when dealing with PDF manipulation