PDF Specification Archive - PDF Association
...The latest PDF 2.0 standard (ISO 32000-2:2020) is now available at no cost. For additional reference, this page serves as an index of the evolution of the PDF format, and includes external links to all legacy Adobe PDF references and errata, as well as to the ISO 32000 family of standards....
https://pdfa.org/resource/pdf-specification-archive/
PDF standards ? PDF Association
...PDF/R defines a simple subset of PDF for multi-page raster-image documents, including, but not limited to, scanned documents. PDF/R is the ISO standard of the PDF/Raster 1.0 specification developed within the PDF Association....
https://pdfa.org/pdf-standards/
Portable Document Format Reference Manual - Adobe Inc.
...To improve performance for interactive viewing, PDF defines a more structured format than that used by most PostScript language programs. PDF also includes objects, such as annotations and hypertext links, that are not part of the page itself but are useful for interactive viewing....
https://opensource.adobe.com/dc-acrobat-sdk-docs/pdfstandards/pdfreference1.0.pdf
PDF - Wikipedia
...The PDF 1.4 specification allowed form submissions in XML format, but this was replaced by submissions in XFDF format in the PDF 1.5 specification. XFDF conforms to the XML standard....
https://en.wikipedia.org/wiki/PDF
PDF 2.0, ISO 32000-2 (2017, 2020) - Library of Congress
...PDF 2.0 is an international standard (ISO 32000-2:2017), published as a successor format to PDF 1.7 (ISO 32000-1:2008). A dated revision for the same format specification was published in December 2020....
https://www.loc.gov/preservation/digital/formats/fdd/fdd000474.shtml
PORTABLE DOCUMENT FORMAT (PDF) SPECIFICATIONS
...These specifications are for creating documents in Portable Document Format (PDF) for submission to CDER or CBER, that align with ICH M2 recommendations1 and that are in a format that the......
https://www.fda.gov/media/76797/download
PDF specification - Adobe
...Subsequent versions of the PDF specification included additional features such as the addition of form controls, and included support for accessibility as the features were introduced....
https://www.adobe.com/accessibility/pdf.html
Exploring the PDF Format Specification - Mapsoft
...The ISO 32000-2:2020 specification, also known as PDF 2.0, is a comprehensive document detailing the technical framework and standards for creating and processing Portable Document Format (PDF) files....
https://mapsoft.com/posts/pdf-format-spec.html
ISO 32000-2 (PDF 2.0) bundle ? PDF Association - pdfa-inc.org
...Subscribe here for the PDF Association?s periodic updates regarding new, updated, or corrected industry and ISO specifications for PDF technology. For convenience, the PDF Association includes the following publications in this bundle....
https://www.pdfa-inc.org/product/iso-32000-2-pdf-2-0-bundle-sponsored-access/
ISO 32000-2:2020 - Document management ? Portable document format ...
...Therefore this version remains current. This document specifies a digital form for representing electronic documents to enable users to exchange and view electronic documents independent of the environment in which they were created or the environment in which they are viewed or printed....
https://www.iso.org/standard/75839.html