Development of PDF began in 1991 when Adobe's co-founder John Warnock wrote a paper for a project then code-named Camelot, in which he proposed the creation of a simplified version of Adobe's …

Download free Adobe Acrobat Reader software for your Windows, Mac OS and Android devices to view, print, and comment on PDF documents.

Summary of all PDF version from 1.0 to 1.7, with an overview of the release date, matching Acrobat software and new features

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 …

Jul 26, 2023 · PDF versions refer to different iterations of the Portable Document Format (PDF), each defined by its own PDF specification document. As a widely used document format, PDF has …

Jul 28, 2025 · This article provides a comprehensive guide to PDF version compatibility, covering the evolution of PDF standards and addressing common challenges related to file accessibility and …

With the introduction of PDF version 1.5 (2003) came the concept of Layers. Layers, more formally known as Optional Content Groups (OCGs), refer to sections of content in a PDF document that can …

Explore PDF standards including PDF 2.0, PDF/UA, PDF/A variants, and understand specifications for document management. Learn more.

Discover everything you need to know about the PDF file types with Adobe. In this handy guide, we’ll cover the different PDF types and their various uses.

There is a difference between the version number of the PDF standard used by the PDF document and the version number of Adobe Acrobat with which the PDF document is compatible. The “version of …