JPG, GIF, and PNG as they are already compressed files
The program allows large files to be compressed for either sending via e-mail or transferring to another source (e.g. from desktop computer to laptop). One must have the accompaning unzip program to allow the files to be redistruted to whatever source was chosen
FAT32 does not support compression of filesor folders
Defrag
There is an alternative software for working with dbf files.
Prism lets you set compression/encoder rates, resolution and frame rate of output files. Prism supports everything from HD to high compression for smaller files.
No, it is not possible to unzip files without software. When files are "zipped" they undergo compression. Most archive files undergo this compression to save space and combine files. Also, archives my be encrypted an unable to unzip without the proper software or password.
make it possible for your OS to save, maintain, and access files
File compression uses software algorithms to reduce file size by reducing the bit-rate of a file. Lossy compression takes it a bit further and lowers the quality of thr file to make it even smaller. Lossy compression is commonly used for media files, but would not be appropriate for other types of files.
No, usually MP3 files are much smaller than wave files, because they use compression to reduce the size.
The lossy compression in the JPEG files generates a blur effect near the edges in the image. The stronger the compression, the more visible the blur effect.
File compression programs make files smaller or combines files into one for smaller storage space. These programs take up less room in your computer memory or allow them to be put on devices such as zip drives.
Use an online tool that can compress PDF files for free, such as Adobe Acrobat. Use a desktop software that can optimize PDF files, such as Adobe Acrobat Pro or Nitro Pro. Use the built-in feature of your PDF reader or creator, such as Adobe Reader or Microsoft Word.