Why is PDF Preferred?
The PDF format has become the first choice for securing and distributing data at low cost, both on local networks as well as on the internet. It is a print format that enables the user to electronically replicate the impression of a page. The PDF format's ability to allow the documents to be viewed and printed easily has been quintessential to its popularity and success. In addition, PDF documents are absolutely secure. The security options of a PDF document protect the information from tampering, piracy and any sort of fraud.
How Many Types of PDF are There?
There are three different kinds of PDF - PDF Normal, Image Only and Image & Hidden Text. The PDF Normal format includes the entire text of a page with suitable coding to describe fonts, sizes and so on-it enables the user to search text. The Image Only format is a non-searchable scanned image of the text. On the other hand the Image & Hidden Text is also an image of a page; however, it allows the user to search the text which is digitized through OCR. OCR is the software that allows scanning text from a document and translating the images into an electronic text, which is further edited with word processor. In this procedure an optical scanner is used for reading text, and advanced software is used for analysing images in the page as a bitmap (a pattern of dots).
How to Reduce All Kinds of PDF?
It is extremely important to compress all types of PDF so that they do not occupy unnecessary space and can be distributed easily through the internet. The important concern in PDF file compression is to reduce the size without loss of key data or reduction of quality. Compression achieved without any change to the original bitmap is lossless compression. For this, the compression system should be able to distinguish between noise and signal in the file. A lot of data in these documents are redundant. PDF file reduction works on the principle of reducing the bits and bytes in the document.