LEADTOOLS supports the following file formats which support multipage files:
Animated Cursor Animated Gif CALS3 DCX DICOM (read Only) FlashPix FLC GIF IFF IOCA/MODCA MNG Mixed Raster Content (MRC) PCT PCX PDF PDF - LEAD MRC SFF TIFF TXT
To load all pages of a multipage file, use one of the Load methods that have the firstPage and lastPage parameters, setting firstPage to 1 and lastPage to -1. Or you can use the Load(Stream) or the Load(String) method, which loads all of the pages of a multipage file.