Ghostscript 

ActiveX DLL for Visual Basic, VBA, .NET, and ActiveX-compatible programming language to automatically create Adobe Acrobat PDF files from many different file types.

Extract text from PDF files and produce plain ASCII text files. Load multiple PDF files into this program and batch convert them in seconds.

Capture photos and pictures from PDFs. Convert (extract) images found in PDF files to JPG (JPEG). Simply load multiple PDF files into the program and images will be batch extracted in seconds.

 Ghostscript