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Czkawka is a simple, fast and free app to remove unnecessary files from your computer.
Source Code:
License:MIT License
Function:De-Duplication,File Management,Appraisal


Czkawka is a simple, fast and free app to remove unnecessary files from your computer.


  • Written in memory-safe Rust
  • Amazingly fast - due to using more or less advanced algorithms and multithreading
  • Free, Open Source without ads
  • Multiplatform - works on Linux, Windows, macOS, FreeBSD and many more
  • Cache support - second and further scans should be much faster than the first one
  • CLI frontend - for easy automation
  • GUI frontend - uses GTK 4 framework and looks similar to FSlint
  • No spying - Czkawka does not have access to the Internet, nor does it collect any user information or statistics
  • Multilingual - support multiple languages like Polish, English or Italian
  • Multiple tools to use:
  • Duplicates - Finds duplicates based on file name, size or hash
    • Empty Folders - Finds empty folders with the help of an advanced algorithm
    • Big Files - Finds the provided number of the biggest files in given location
    • Empty Files - Looks for empty files across the drive
    • Temporary Files - Finds temporary files
    • Similar Images - Finds images which are not exactly the same (different resolution, watermarks)
    • Similar Videos - Looks for visually similar videos
    • Same Music - Searches for music with the same artist, album etc.
    • Invalid Symbolic Links - Shows symbolic links which point to non-existent files/directories
    • Broken Files - Finds files that are invalid or corrupted
    • Bad Extensions - Lists files whose content not match with their extension

User Experiences[edit]

E. Bärwaldt (2022). File Diet: Remove unnecessary files with Czkawka. Linux Magazine, Issue 251/2021.