In computer terminology people most often come across the term compression. They use compression to reduce various files including PDF files as well in an endeavor to save extra space. With compression a text file size can be reduced up to 50% from its original size. This compression is carried out by a program which uses a formula or algorithm to verify how to reduce or decompress the data. However, algorithm is believed to be the critical factor in deciding the compression quality. There are various free PDF Compression software available which makes the life easier for a user.
In PDF files compression is mostly used to compress images. As PDF files are very large in sizes so it is a good idea to compress it. After compression PDF files can tend to become lightweight by using compression algorithms like LZW (Lempel-Ziv-Welch), JPEG and JPEG2000, FLATE (ZIP, in PDF 1.2), CCITT, JBIG2 compression, Run Length encoding etc. For example by using JPEG compression, various images whether color or grayscale ought to be compressed by a factor or 10 or more. However, LZW or Flate compression of the content flow of text and graphics in a document can be compressed in the ratio of approximately 50%.
Various software companies are providing free PDF Compression software to download on a trial basis and are contemplating that a user can compress documents in the range of 30 to 60%. A user can shrink PDF files by using Flate or RunLength compression algorithm to generate smallest size PDF files.
Free PDF Compression software could be lossy or lossless in nature in lossy compression a user cant recover the lost colors while in lossless all the colors can be restored.
CVISION Technologies, Inc., the number one world leader in image compression, OCR and PDF workflows offers the ability of converting documents into compressed, web-optimized and text-searchable PDF files with their supper accurate PdfCompressor software. The company is using the latest technology in compression like JBIG2 and JPEG2000 compression formats with the result PdfCompressor makes the one of the compact, web-friendly PDF files. An individual can download this free PDF Compression software on a trial basis from http://www.cvisiontech.com/products/general/pdfcompressor.html.