Auto reverse
An essential feature for all but the most basic shredder users. This feature means that the shredder will automatically reverse the cutting process when jams occur. This can prevent the cutter blades from bending or breaking.

Cross-cut shredders
Shredders that cut paper both lengthwise and widthwise. These machines insure that pages cannot be pieced together by a determined reader.

Sheets per pass
The number of sheets that can be fed into the machine at a time.

Strip-cut shredders
Shredders that reduce papers into long thin strips.