Desktop layout file (Publish-iT)
DTP is a page layout file format used by Publish-iT. DTP files contain page information, such as text, images and formats. Publish-iT is a desktop publishing software, which can be used to create newsletters, brochures, and other printable documents. DTP files can be saved as .PDFs within Publish-iT.
Learn more about .DTP files:
Search for .DTP-related questions on IT Knowledge Exchange.