The PDF is designed to keep up with today’s fast-paced and highly demanding work world. Portable Document Format files are safe in online activities because these are “Read Only” files that cannot be altered without leaving the Electronic foot print .This makes the PDF safe since it satisfies the legal requirements to stand up in a court of law.PDF file system was introduced by the Adobe systems in 1993 to make a safe file transfer in electronic media.PDF is equipped with Compression Algorithms which is used for compressing the graphics or images in the files. Algorithm makes the PDF file smaller and portable. TIFF, JPEG, GIF files etc used in web can be easily altered without leaving the electronic footprint, but it is difficult to manipulate PDF and the owner can make complaints if a manipulation is noticed.
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