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More storage space, more performance – with the integrated O&O DiskCleaner

O&O DiskCleaner is fully integrated into O&O Defrag and ensures a thorough and secure cleanup of your Windows system. The feature automatically scans your computer for unnecessary files, temporary data, update remnants, and hidden system ballast that can consume unnecessary disk space or slow down your PC over time. With just a few clicks, you can reliably remove legacy assets and instantly create more space and order – for a faster, leaner and more efficient Windows system.

Automatic detection of redundant files

  • Finds unnecessary temporary data, cache files, and outdated system leftovers
  • Provides a safe way to reliably delete unusable files

More storage space with just one click

  • Cleans up large amounts of data in the shortest possible time
  • Instantly frees up memory and creates a tidy system structure

Optimized system operation

  • Removes legacy issues that can slow down programs and processes
  • Improves the overall performance and stability of your system

Clean up Windows and app leftovers

  • Removes old Windows updates, bug reports, log files and installation leftovers
  • Cleans up junk files from web browsers and applications

Transparent analysis before deletion

  • Displays in detail which files were found and how much memory can be freed up
  • Gives full control over which areas to clean up

Safe cleanup without risk

  • Identifies only files that are safe to delete
  • Reliably protects system files and important user data

Perfectly integrated into O&O Defrag

  • Ideally combined with defragmentation and system optimization
  • Part of O&O Defrag for maximum performance enhancement

Easy to use

  • Intuitive interface without complex settings
  • Ideal for beginners and professionals alike