Adobe PDF (Portable Document Format) is an industry standard for document exchangement and archiving. It becomes more and more popular and important in people's life and work. Most people prefer PDF e-books as you can put the ebooks in your Mobil or PDA and view it no matter when and where; governments and enterprises always use PDF to archive the confidential documents. Why people choose PDF? What makes PDF so popular? There are some reasons for this:
Good view feeling
When you read a PDF file, it is just like reading a paper book. PDF files look like original documents and preserve source file information — text, drawings, multimedia, video, 3D, maps, full-color graphics, photos, and even business logic — regardless of the application used to create them and even when compiled from multiple formats into a single PDF Portfolio.
And it's easy to read a PDF file, just with a free PDF reader, you can view PDF files. Readers also can adjust the display size and way for personalized reading.
Portability
PDF files are viewable and printable on virtually any platform, including Windows®, Mac OS, and mobile platforms such as Android™, iPad or iPhone. This feature makes PDF be big different from those online resources, CSS, JavaScript, etc. and it is the main reason why PDF is so popular with millions of people across the globe for sharing information.
Of course, you can send Office Word, Excel, PowerPoint and HTML or other files, but they might not look the same as the original files after attaching as an email. As some file quality, such as formatting and layout, may be lost during the transmission process. However, this case seldom happens to PDF format.
Security
Password provides a simple way to restrict access and usage of your PDF content. With user password, you can prevent other people from opening it; owner password is used to protect your PDF ebooks from copying, printing and editing. And now, many PDF creation program supports the password-set option to allow you to make your PDF file more secure.
Digital Signature
The digital signature and certificates in PDF file makes the PDF encryption be stronger, especially in business industry. As the digital signature in the PDF assures that the information has not been altered since it was sent and verifies the signer's digital identity.
Reliable
The statistics shows that there are more than 150 million PDF documents publicly available on the web today, along with countless PDF files in government agencies and businesses around the world, serve as evidence of the number of organizations that rely on PDF to capture information.
This only lists several main PDF features and shows why PDF is so popular? As a matter of fact, there are many other factors that make PDF more attractive to people, such as small in size and consumes less disk space, text searchable so that you can search any words in a PDF.
