The Portable Document Format, or PDF, is a file format for storing and presenting digitally-formatted text and images in a cross-platform and application-independent way. PDF is a widely used document format that has also been extended to store geospatial information.
The PDF specification, starting with version 1.7, includes extensions for geospatial PDFs that map portions of the document to a physical space, also known as georeferencing. You can create points, lines, or polygons as geospatial geometries, which can also have attributes.
There are two methods for encoding geospatial information within a PDF. A company named TerraGo created a specification that has been adopted by the Open Geospatial Consortium as a best practice which is not a standard. That format is known as GeoPDF. The extensions that were proposed by Adobe Systems, which created the PDF specification...