PDF files are a type of electronic file created by Adobe Systems in 1993. The idea behind PDF files is to create a standardized way to view and share documents regardless of the operating system or program used. Before PDF files, it was difficult to share documents between users using different operating systems or programs due to the differences in file formats. This problem was solved by PDF by creating a universal document format that can be opened on any device using Adobe Reader or internet browsers. PDF files have quickly become a common format for sharing documents and are now used in a variety of applications, including creating electronic forms, publishing e-books, and storing records. In 2008, the PDF format was converted to an open standard by the International Organization for Standardization (ISO). This means that anyone can create programs that can read and create PDF files. As a result, PDF files have become more common and widely used, and will likely be present and important for several years to come.
Components of PDF files
PDF files consist of two layers:
Content layer: Contains text, images, graphics, and other elements that make up the document content.
Display layer: Determines how the document content is displayed on the screen.
The content layer is used to store the document content independently of the program or device used to view it. This means that a PDF file will look the same on any device, regardless of the operating system or program used. The display layer is used to determine how the document content is displayed on the screen. This layer may include information such as fonts, colors, graphics, and the arrangement of elements on the page. Here are some advantages of using PDF files:
Uniform display: PDF files look the same on any device, regardless of the operating system or program used. Easy sharing: PDF files can be easily shared with others, even if they do not have the same program used to create the file. Security: PDF files can be secured with a password or encryption to prevent unauthorized access. Compatibility: Most programs support PDF files, making them a common format for sharing documents. PDF files are a powerful and flexible document format widely used in a variety of applications.
