Creating a PDF file from a collection of image might not be quite a common task, but if you want to show your latest digital photos and share them to your friends, instead of uploading photos one by one, sending a PDF file with all photos might be the best option. i2pdf is a freeware tool which can create a PDF file from a collection of images. You can drag and drop the images on to the application and build the PDF files in seconds.
When you click the Build PDF, it opens the options window where you can set the image quality and size and also add a custom text or thumbnail to the PDF file.
i2PDF can process only image formats JPG, PNG, BMP, TIFF and GIF. Apart from this, the number of images that can be processed is limited by the available memory / addressable space. You can check the available memory from Help->About.