Wednesday, December 30, 2009

File Compression Methods of Various File Formats

File compression means making the file size smaller that will ultimately help in transferring files to other places easily and storing them in much less space. There are variety of file formats like JPEG, PDF, Word, EXCEL, TIF, PNG, GIF, BMP etc. All formats use lossless compression algorithms that means it can return the original data format when required except the JPEG file format. Lossless compression limits the integrity of the files. The efficiency, compression of files is limited to some point. But this does not happens in JPEG image format.

JPEG uses lossy compression algorithm that will compress the image up to 1/10th of the original data but it cannot recover the original file format after compression as it uses lossy compression. JPEG compression losses the quality of the image but reduces the size of the image to very small which can be helpful while sending or uploading on web or Email. Due to lossy compression method, JPEG can modify the image pixel to be more or less compressed accordingly. You need a good ground or motive to use JPEG file format as losses the data of file format after compression that cannot be recoverable.
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