In the process of document shredding with high throughput, the files are stored on an infeed conveyor belt like loose sheets or entire federal files. The input is fed to the shredding unit. With a throughput of several hundred kilograms per hour, the files are shredded in accordance with security requirements. To reduce the volume, the shredded paper chips are compressed into compact briquettes in a briquetting process. With this compact document shredder, the operational process is simplified, the security requirements are met and the disposal costs are reduced.