Mp3 Packer is a tool that has been specifically designed for the purpose of reducing the size of mp3 files. It can be used to process any number of mp3 files since it can process all files in a directory and even its subdirectories at once. The size reduction will not affect the quality of the mp3 files, a pure lossless size reduction so to speak.

Various output settings are available that have an impact on the newly generated files. It is possible to specify a minimum bitrate, select the output type (vbr or cbr), strip non-mp3 data from the start or end of the file, append text to the filenames, alternate broken frame behavior or super-squeeze files.

The mp3 packer will process all audio files in the selected directory and display information about the size gain at the end.

Another interesting option of Mp3 Packer is the ability to create profiles. This can be useful to make sure that the mp3 files will always be packed using the exact same settings. MP3 Packer is a portable application which means it can be run without installation.