Meet MP3 Quality Modifier, a portable and free mp3 compressor that you can download from the developer’s website. It compresses mp3 size by allowing you to reduce the quality of all the mp3 files you have in only a few clicks by modifying the bitrate. Drag and drop the song into the program’s interface and all the information will be displayed automatically that include its name, size or bitrate.

To reduce the quality of an mp3 file you can change the bitrate by manually entering a custom value or by simply select one of the available quality presets: high quality, portable, compromise, and very low quality. The quality compression or reduction takes only a few seconds for each mp3 file.

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