PDF is the abbreviation for Portable Document Format. PDF is one of the major file formats that are used while data is being shared, mainly on the internet. PDF format is popular because it cannot be edited and also, all types if files, text, images, animations, audio and videos are all supported by PDF files and hence, once they are arranged in a chronological order in the document, it cannot be changed.
However, the major drawback when it comes to usage of PDF is that the size of the files are big because each and every image must be embedded in the file and also, the fonts, videos and whatever is included should be embedded in the file which can make the size of the file a reasonably large one. The best suited files would be scanned PDF smaller in size than in their original case.
Scanned PDF smaller in file size are generally in the PDF format as scanning is usually done with the help of Optical Character Recognition and Optical Mark Recognition sensors. These technologies are more compatible with the PDF format and also, there are soft wares that enable the easy conversion of scanned data into a searchable PDF format and soft wares for converting the same to a searchable text format is comparatively low and hence, the former is preferred.
When the documents are scanned, the size of the PDF file is large and it may be a problem when the file is shared through the internet and email. Hence, there rises a necessity for the scanned PDF smaller in size. This can be done in a few ways. There are soft wares that do the same thing and by compressing the images and reducing their dimensions and pixel resolutions, the scanned PDF smaller in size than the original file are obtained. The pictures may even be saved in a space saving format like JPEG or GIF format. Also, the fonts embedded may be different and some fonts that may not be used in the document may be embedded and these can be cleared for achieving lesser size of the file. Also, man data that is present in the PDF file can also be deleted so that the scanned PDF smaller in size and preferred format files are made available.