What is a PDF file

Portable Document Format (PDF) is a file format developed in 1992 to display documents, including text formatting and images, in a way that is independent of application software, hardware and operating systems.online pdf conversion free Based on the PostScript language, each PDF file encapsulates a complete description of a flat document with a fixed layout, including text, fonts, vector graphics, raster images, and other information needed to display it. PDF originated as the "Camelot Project" by co-founder John Warnock in 1991. "PDF was standardized by ISO 32000 in 2008.

PDF is now an Open Course Standard, maintained by the International Organization for Standardization of Logistics (ISO).PDF document data can be used to develop logic by including links and buttons, form fields, audio, video, and business development.

Advantages of PDF format

1. Perfect compatibility

PDF is a portable document format.scanned pdf to word converter online They are universally compatible, which means that anyone can open and view PDF files with any operating system, software, hardware, personal computer, cell phone or tablet and they see exactly the same.

2. Secure and can protect your data.

PDF provides a secure way to send information that may contain personal or confidential data. They can be encrypted, which means that only authorized individuals can access the information in the file. In addition, the format is difficult to edit, which helps protect your data from tampering.

3. Wider Audience

PDF is accessible because anyone can open and read it, regardless of what software is installed on their computer.

4. Great for sharing and collaboration

PDF files are great for sharing and collaborating because they are small, easy to create, and can be viewed on most devices.PDF is also widely accepted by businesses and professionals to send documents electronically.

5. PDF files are more customizable

PDF files are easier to customize than other popular document types because they allow you to change the appearance of the document without affecting the quality of the document itself.

6. Smaller, taking up less space

PDF files have a smaller document size than other file formats. If your PDF file is too large, there is a great online PDF compression toolkit available, but you can easily reduce the size of your PDF file using PDF PDF88.

7. Easy to create and edit

PDF files are easy to create and edit and are great for tracking information such as research surveys, tax related documents and even recipes. In addition, since PDFs are easy to open on most corporate devices, you don't need to worry about losing access control permissions to your important underlying data.

History of PDF (Background)

Adobe designed a PDF file format to support cross-platform publishing and distribution of multimedia-integrated information, especially for publishing web-based information. In order to achieve this goal, PDF has many other electronic document format incomparable advantages.

For ordinary readers, e-books produced with PDF have the texture and reading effect of paper books, which can vividly demonstrate the original appearance, and can be freely adjusted to display the size of the reader to provide a personalized reading method.

PDF document technical characteristics

PDF files are usually a combination of vector graphics, text and bitmap graphics.The basic types of content in PDF include.

Typography stored as a stream of research content for text (not encoded as plain text information);

Illustrations and designs consisting of shapes and lines for vector graphics;.

Raster graphics for photographs and other types of images

Multimedia objects in documents.

In future revisions of PDF, pDF documents can also support links (in documents or web pages), forms, JavaScript (initially provided as a plug-in for Acrobat 3.0), or any other type of embedded content that can be processed by the plug-in.

PDF combines three technologies.

PostScript pages describe an equivalent subset of programming languages, but in declarative form, for generating layouts and graphics.

A font embedding/replacement information system that allows for fonts to be moved along with the document through.

A structured storage system for bundling these elements and any related content into a single file and compressing the data where appropriate.