Need for PDF Compression
PDFs are created so frequently nowadays on account of the unique properties and security features that PDF files provide. For one, PDF files can run on any sort of environment, irrespective of the hardware software as well as the networking environment that exists. Again, there are also a host of password protection, restriction creating as well as encryption properties that make PDF files so widely sought after. PDF files are used extensively in data storage, archival and also retrieval, which is made possible due to the security as well as metadata related features of PDFs that help to categorize and tag PDF files. When it comes to PDFs, there are certain requirements in terms of effective data storage as well as transmission that are closely linked to the size of the files. Large size files are not easy to store or even transmit by e-mail on account of which there is a need for PDF compression.
What is PDF Lossy Compress?
PDF compression can be either lossy or lossless in natire. Lossy compression is quite common in compression of a host of multimedia files like those which have video, voice as well as still images. Lossy compression take place when the original file gets compressed to a large extent, and when it gets decompressed later, the file is quite close to the original file, even though there is some loss in the properties of the file. This implies that with every compression and subsequent decompression, there is some loss in the file property and if a number of compressions are performed on the same file, the file would almost be unrecognizable vis-à-vis the original uncompressed file that it was created from.
Pros and Cons of Lossy Compression
Lossy compression is quite useful for image file compression like in the case of high resolution JPG. When such a high file size PDF file is sought to be transmitted online, there are problems on account of the file size. Lossy compression makes it possible to compress files to even 1% of the file size to facilitate effective transmission of data via e-mail. However, the problem with lossy compression is that it affects the quality of files substantially with each progressive compression, which makes it unsuitable for compression of files containing bank records or word based documents.