PDF specifications 1.0 to 2.0

PDF versions 1.0 to 2.0 represent the evolution of the Portable Document Format. Version 1.0, released in 1993, established the core structure for reliably sharing formatted documents across platforms. Over time, subsequent updates added features like enhanced graphics, interactive elements, digital signatures, and improved security. PDF 2.0, finalized in 2017, is the most recent standard, refining specifications for better compatibility, accessibility, and security, while maintaining the format’s fundamental goal: preserving document appearance and functionality consistently across different devices and systems.