What a Free PDF Shrinker Does
If you are a website content manager using PDFs for presentations then you most probably would have faced a situation where your PDF files were too big to upload on your website or send to your clients via email. What you actually need are smaller PDFs so that your clients can download them quickly. PDF files can end up very large due to images. Being a widely used document format, this is why PDF files need to be shrunk. PDF files can be compressed up to a 100 times smaller. Shrinking the PDF file size makes it easier to store and can be optimized for sharing. There are several free PDF shrinker software that are available online. Most are capable of shrinking files to a large extent while maintaining the quality of its original content. These files are easy to store and occupy less storage space.
How a Free PDF Shrinker Works
Free PDF shrinker software compress data in the usual format. PDFs can be shrunk in various ways. All unnecessary items in the files can be deleted to make the file smaller. Characters that appear frequently can be substituted with smaller strings. A free PDF shrinker software will adopt one or more of these techniques. Compression is to a greater extent performed on the larger images in the files. Shrinking does not lead to any loss of data. Most free PDF shrinker software use Flate or Run Length compression algorithm. On decompression, the files will expand back to its original size. There is no loss of data with compression algorithms.
How to Shrink a PDF
The general procedure to shrink a file is to first open the PDF document. Selecting the 'Preview' option will open up the file. From the 'File' menu click on 'Print' and then on 'PDF'. From the drop down menu select 'Compress PDF'. This initiates the compression process. Once this is complete, name the file and save it for further use. The end result will be a PDF file that takes up half the storage space as the original. Most free PDF shrinkers allow you to compress files on a small scale. If you have a large amount of files to compress you would need to purchase the full version which enables you to do batch processing.