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Czkawka

Czkawka

Fast, multi-purpose duplicate and junk file finder written in Rust

softwareDuplicate Findersduplicate finderdisk cleanuprust
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Our Verdict

Best for

Anyone wanting a fast, free, offline duplicate and junk file finder that also catches similar images and broken files.

Skip if

You need cloud-storage duplicate scanning or a highly polished commercial-grade GUI.

What is Czkawka?

Czkawka is a free, open-source, cross-platform tool that finds duplicate files using content hashing rather than filenames or sizes alone, and goes further by detecting visually similar images, similar audio, broken or corrupted files, empty folders, and unusually large files. Built in Rust, it uses CPU-efficient multithreading to scan large drives quickly. It offers both a GUI, via the newer Krokiet frontend, and a command-line interface for automation, runs entirely offline with no telemetry, and supports batch actions to move, delete, or symlink duplicates once reviewed.

SpecificationsAI-estimated

deploymentDesktop App
open source✅ Yes
api available❌ No
support optionsGitHub issues, community
key integrationsCommand-line interface for scripting

Key Features of Czkawka

Detects true duplicate files using content hashing rather than relying on filenames or sizes alone.
Finds visually similar images and audio files, not just byte-for-byte duplicates.
Locates broken or corrupted files, empty folders, and unusually large files cluttering storage.
Uses CPU-efficient multithreading to scan large drives quickly.
Offers both a GUI, via the Krokiet frontend, and a command-line interface for automation.
Runs entirely offline with no telemetry or data collection.
Supports batch actions to move, delete, or symlink duplicates once reviewed.
Actively maintained with frequent releases addressing performance and scan-caching improvements.

Use Cases for Czkawka

1

Cleaning up a photo library full of near-duplicates

Find visually similar photos, not just exact duplicates, to reclaim space in a large image collection.

2

Reclaiming space by removing exact duplicates

Hash-scan an entire drive to find and remove byte-for-byte duplicate files safely.

3

Finding and removing broken downloads

Detect corrupted or incomplete files left over from failed downloads or transfers.

4

Automating cleanup via command-line scripts

Use the CLI to script scheduled duplicate and junk file cleanup across multiple machines.

Pros & Cons of Czkawka

Pros

  • Completely free, open source, and works offline with no telemetry
  • Very fast thanks to Rust and multithreaded scanning
  • Goes beyond exact duplicates to catch similar images, audio, and broken files
  • Cross-platform on Windows, macOS, and Linux

Cons

  • GUI is less polished than some commercial cleaners
  • Similar-image and similar-audio matching can occasionally produce false positives needing manual review
  • No cloud storage scanning, local and mounted drives only

Frequently Asked Questions

Is Czkawka free?

Yes, it is free, open source, and ad-free.

Does Czkawka only find exact duplicates?

No, it can also find visually similar images, similar audio, broken files, and empty folders.

Does Czkawka send any data online?

No, it runs entirely offline with no telemetry.

What platforms does Czkawka support?

Windows, macOS, and Linux.

Pricing Overview

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Free

Detailed plans are not listed. Visit the official website for pricing information.

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Best For

🧑‍💻Freelancers🏪Small Business Owners

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About the Product

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Platforms
WindowsMacLinux
Target AudienceUsers and IT technicians who want a fast, free, privacy-respecting tool to find duplicate and junk f

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Tags

duplicate finderdisk cleanuprustopen sourcefile management

Explore Related Topics

File ManagerOpen SourceRustSystem Administration

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