“Portable Document Format (PDF) files have become somewhat of a
de-facto standard for representing fixed layout 2D documents, and
their use and versatility have grown over the past decade.
Recently, Adobe announced that it intends to release the PDF 1.7
specification for publication by the International Organization for
Standardization (ISO). As demand increases for this format, many
are wondering, what tools can be used to create PDFs with free
software?“Fortunately, there are a variety of free software that is
available to author PDF files…”