It is a file format developed by Adobe Systems for file exchange, which has nothing to do with applications, operating systems and hardware. PDF file is based on PostScript language image model, which can ensure accurate color and accurate printing effect on any printer, that is, PDF will faithfully reproduce every character, color and image of the manuscript.
This file format has nothing to do with the operating system platform, that is, PDF files are common in Windows, Unix and Apple's Mac OS operating systems.
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Reading tools—
1、Adobe AcrobatReader
Application platform: Windows XPService Pack 3(32-bit) or Service Pack 2(64-bit); windows Server 2003 R2； Windows Server 2008 or 2008 R2；; ; windows 7； Windows 8 or 8. 1
Introduction: Official readers are allowed to read PDF documents, fill in PDF forms, view information of PDF documents, edit PDF documents quickly, and transmit them to Word and Excel. Good stability and compatibility. Disadvantages are huge volume and slow start-up speed.
2. Foxit reader
Supported platforms: Windows Series/Mobile Platform /Linux
Introduction: Most reading functions can be realized. Portable applications. Small size and fast starting speed.