The word compression literally means reducing size, or cramming something into a smaller space. In terms of computers, compression translates into the reduction in the size of files, so that one can save on space and transmission time. This is achieved either by compressing the data content or the entire transmission unit. It may be possible to reduce size to more than half the original size. A program that employs an algorithm works on the files and determines how to compress and decompress the file.
PDF is today a commonly used format in which companies save their documents. The problem with PDF is that files in this format tend to be somewhat large, especially when they contain both text and images. This causes a need for larger storage space and longer duration to transfer the files. Compression software comes in handy here.
PDF compression helps to reduce the file size while maintaining the quality of the original software. Some compression software can also remove text annotations, page labels, bookmarks PDF forms etc. Some packages also have special graphic interfaces.
Batch PDF compression software compresses entire folders and drives of data stored in PDF format. Batch compression of PDF helps to store files, subfolders and folders in a compressed form while maintaining their original structure. This makes it easy to retrieve data upon decompression. Further, you can set up for watched folders, so that the software automatically compresses newly added PDF files. Some packages can compress folders into one tenth the original size.
Batch PDF compression can come in especially handy in creating and uploading data to the Web. The important concern in batch compression of PDF is to compress files without loss of key data or reduction of quality. Compression achieved without any change to the original bitmap is called lossless compression. For this, the software should be able to distinguish between noise and signal in the file. If this is achieved accurately, the resultant data preserves all of what matters.