Czkawka icon
Czkawka icon

Czkawka

 120 likes

Czkawka is a simple, fast, written in Rust and easy to use app to remove unnecessary files from your computer.

Czkawka screenshot 1

License model

  • FreeOpen Source

Country of Origin

  • PL flagPoland
  • European Union flagEU

Platforms

  • Mac
  • Windows
  • Linux
  • Flathub
4 / 5 Avg rating (22)
120likes
15comments

Features

Suggest and vote on features

Properties

  1.  Lightweight

Features

  1.  Duplicate File Finder
  2.  Image Preview
  3.  Fast file and folder search
  4.  Dark Mode
  5.  Graphical User Interface
  6.  Multi Folders Selection
  7.  Rust
  8.  Command line interface
  9.  Ad-free
  10.  Works Offline
  11.  No registration required
  12.  No Tracking
  13.  Portable

 Tags

  • duplicate-files
  • support-for-large-file
  • duplicates
  • empty-folders-finder

Czkawka News & Activities

Highlights All activities

Recent News

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Recent activities

  • puddle, diegozpy, MAO and c17s5qhu liked Czkawka
    12 days ago
  • App icon
    DupeSweep added Czkawka as alternative to DupeSweep
    26 days ago
  • rolrx, ikashnitsky and yongqi liked Czkawka
    about 2 months ago
  • App icon
    POX added Czkawka as alternative to OverClean
    2 months ago
  • ignacypasikonik liked Czkawka
    3 months ago
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Comments and Reviews

   
 Post comment/review
Comment summary: Czkawka is praised for its open-source nature, multiplatform support, and speed as a filesystem deduplicator. It’s regularly updated and supports Linux first, with Windows compatibility. Despite its performance benefits, users report issues such as difficult installations, a bad UI, and serious bugs affecting file handling. Concerns include potential Trojans in the Windows GTK version. While the second impression can be positive, improvements are needed, particularly for the GUI.
Top Positive Comment
Pierre LeBaux
Jul 8, 2022
4

Linux first, but also supports Windows. Regularly updated - unlike most software in this category.

Top Negative Comment
ezbie
Jan 15, 2024
2

Not great. In my first attempt to use it I found (and reported) two serious bugs. One is that the app often incorrectly identifies a unique file as a duplicate by showing two entries for the same file path. If you select either entries your file is gone for good. Since I'm scanning a few terabytes of files, I can't afford to check every buggy entry.

The other bug regards the symbolic link feature. As of version 6.1.0 (on Windows) It never creates the symbolic links, it just deletes the file. If you run this over a few terabytes of data you're sure going to fuck your data up.

At this rate, it's unusable.

JohnDangerbrooks
Aug 2, 2024
0

Frankly, the app doesn't leave a good first impression, but its second impression is remarkable. I let it loose on 15,000 on a 150 GB disk. Czakwka completed its job in 13 minutes. In comparison, Wise Duplicate Finder didn't finish overnight.

Performance aside, this app could use a much better UI.

TBayAreaPat
Jun 9, 2024
-1

Questionable installs, bad user interface, and warnings about disappearing files from reviewer(s). I gave it a quick look, but decided to not try a file search. "Best" download I found was from Softpedia. MajorGeeks & Sourceforge install wouldn't work. Run by clicking czkawka_gui.exe. UI is a turnoff.. darkmode with barely visible text.. no setting to change this

picking
May 13, 2024
0

Windows GTK version has Trojan inside. Don’t use it. Not only version 7.0, but also previous versions. https://www.virustotal.com/gui/file/82a886eeb7b4bb0bcf56b218e0a65093b65d9ed4656bc6fe62662b6380a0a806

Jason Brown
Jul 14, 2024

That "trojan" is only 1/65 anti-malware vendors, and an unknown one at that - most software reviews I've read put that kind of ratio as a "false positive". Good that people are checking! But also important to not give too much weight to one, two, or even three bad results from minor companies. Seen a few come and go from VT.

vadek
Apr 23, 2023
-5

Tricky to install, as is everything in Github unless you know where to look. GUI uses teeny tiny font which is difficult to read. Doesn't seem to include subfolders and I can't find an option to include subfolders. So pretty useless to me, I'm afraid.

tangycandy
Apr 24, 2025

A lot of your critique is still pretty valid, especially the tiny font, and not knowing which Github install to download.

A fix for the tiny font can be found here: https://github.com/qarmin/czkawka/issues/787 and here: https://github.com/qarmin/czkawka/issues/993#issuecomment-1586164746

Third Opinion
Dec 27, 2022
1

Funny name but it really does the job! Also it's available as app image.

Awesome program and easy to understand!

Just dragging folders on it doesn't work (tried also adding folders per CLI, also failed).

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7 of 15 comments

What is Czkawka?

Czkawka is a simple, fast, written in Rust and easy to use app to remove unnecessary files from your computer.

Features:

  • Written in memory safe Rust
  • Amazingly fast - due using more or less advanced algorithms and multithreading support
  • Free, Open Source without ads
  • Multiplatform - works on Linux, Windows and macOS
  • Cache support - second and further scans should be a lot faster than the first one
  • CLI frontend, very fast and powerful with rich help
  • GUI GTK frontend - uses GTK 4 framework and looks similar to FSlint
  • Rich search option - allows setting absolute included and excluded directories, set of allowed file extensions or excluded items with * wildcard
  • No spying - Czkawka does not have access to the Internet, nor does it collect any user information or statistics
  • Multiple tools to use:
    • Duplicates - Finds duplicates basing on size(fast), hash(accurate), first 1MB of hash(moderate)
    • Empty Folders - Finds empty folders with the help of advanced algorithm
    • Big Files - Finds provided number of the biggest files in given location
    • Empty Files - Looks for empty files across disk
    • Temporary Files - Allows finding temporary files
    • Similar Images - Finds images which are not exactly the same(different resolution, watermarks)
    • Zeroed Files - Find files which are filled with zeros(usually corrupted)
    • Same Music - Search for music with same artist, album etc.
    • Invalid Symbolic Links - Shows symbolic links which point to non-existent files/directories
    • Broken Files - Finds files with an invalid extension or that are corrupted
    • Bad Extensions - Lists files whose content not match with their extension

Czkawka information

  • Developed by

    PL flagRafal Mikrut
  • Licensing

    Open Source and Free product.
  • Written in

  • Rating

    Average rating of 4 (22 ratings)
  • Alternatives

    129 alternatives listed
  • Supported Languages

    • English
    • Russian
    • Polish
    • Czech
    • French
    • German
    • Italian
    • Japanese
    • Chinese
    • Swedish
    • Portuguese

AlternativeTo Categories

OS & UtilitiesPhotos & GraphicsFile Management

GitHub repository

  •  24,447 Stars
  •  761 Forks
  •  481 Open Issues
  •   Updated May 10, 2025 
View on GitHub

Our users have written 15 comments and reviews about Czkawka, and it has gotten 120 likes

Czkawka was added to AlternativeTo by Paul on Nov 10, 2020 and this page was last updated Mar 18, 2025.