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Czkawka Duplicate Finder
Extremely fast, memory-safe duplicate document and book finder written in Rust.
Tool Overview
Czkawka (Polish for 'hiccup') is a simple, fast, and free app to remove unnecessary files from your computer. Written in 100% memory-safe Rust with multi-threaded scanning, it excels at finding duplicate books, identical PDFs, broken symlinks, and zero-byte files across massive digital libraries.
System Requirements: Windows 10/11 x64, macOS, or Linux x86_64
Key Capabilities & Features
Blazingly fast multi-threaded duplicate file detection using Blake3 hashing
Identifies exact duplicate ebooks and similar documents across terabyte libraries
Clean GTK 4 desktop graphical interface and scriptable CLI (`czkawka_cli`)
Finds broken, corrupted, or 0-byte PDF and EPUB files
Zero telemetry, completely offline, and native desktop execution
Package Manager & CLI Installation
Install and update Czkawka Duplicate Finder using your preferred operating system package manager or container runtime:
$ winget install qarmin.czkawka
Verified Official Release Downloads
12.0.2All binaries are sourced directly from the official developer release assets without re-packaging or modifications.
AndroidVerified
cedinia.apk
Size: 19.14 MBDownloads: 6,032
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deps_linux.sh
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deps_macos.sh
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deps_windows.bat
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linux_czkawka_cli_arm64
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linux_czkawka_cli_heif_raw_avif_arm64
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linux_czkawka_cli_heif_raw_avif_x86_64
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linux_czkawka_cli_musl
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linux_czkawka_cli_x86_64
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linux_czkawka_gui_arm64
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linux_czkawka_gui_heif_raw_avif_arm64
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linux_czkawka_gui_heif_raw_avif_x86_64
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linux_czkawka_gui_x86_64
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linux_krokiet_all_backends_arm64.zip
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linux_krokiet_all_backends_x86_64.zip
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linux_krokiet_arm64
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linux_krokiet_femtovg_wgpu_arm64
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linux_krokiet_femtovg_wgpu_x86_64
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linux_krokiet_heif_raw_avif_all_backends_arm64.zip
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linux_krokiet_heif_raw_avif_all_backends_x86_64.zip
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linux_krokiet_heif_raw_avif_arm64
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linux_krokiet_heif_raw_avif_femtovg_wgpu_arm64
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linux_krokiet_heif_raw_avif_femtovg_wgpu_x86_64
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linux_krokiet_heif_raw_avif_skia_opengl_arm64
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linux_krokiet_heif_raw_avif_skia_opengl_x86_64
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linux_krokiet_heif_raw_avif_skia_vulkan_arm64
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linux_krokiet_heif_raw_avif_skia_vulkan_x86_64
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linux_krokiet_heif_raw_avif_x86_64
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linux_krokiet_skia_opengl_arm64
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linux_krokiet_skia_opengl_x86_64
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linux_krokiet_skia_vulkan_arm64
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linux_krokiet_skia_vulkan_x86_64
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linux_krokiet_x86_64
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mac_czkawka_cli_arm64
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mac_czkawka_cli_heif_avif_arm64
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mac_czkawka_gui_arm64
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mac_czkawka_gui_heif_avif_arm64
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mac_krokiet_all_backends_arm64.zip
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mac_krokiet_arm64
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mac_krokiet_femtovg_wgpu_arm64
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mac_krokiet_heif_avif_all_backends_arm64.zip
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mac_krokiet_heif_avif_arm64
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mac_krokiet_heif_avif_femtovg_wgpu_arm64
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mac_krokiet_skia_vulkan_arm64
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mac_krokiet_skia_vulkan_heif_avif_arm64
Size: 68.44 MBDownloads: 1,128
Windows x64Verified
windows_czkawka_cli.exe
Size: 46.42 MBDownloads: 12,913
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windows_czkawka_gui_gtk_412.zip
Size: 84.69 MBDownloads: 30,126
Windows x64Verified
windows_krokiet_on_linux.exe
Size: 52.21 MBDownloads: 3,201
Windows x64Verified
windows_krokiet_on_windows_all_backends.zip
Size: 27.4 MBDownloads: 13,588
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windows_krokiet_on_windows_femtovg_wgpu.exe
Size: 62.53 MBDownloads: 4,155
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windows_krokiet_on_windows_skia_opengl.exe
Size: 63.12 MBDownloads: 38,071
Windows x64Verified
windows_krokiet_on_windows_skia_vulkan.exe
Size: 65.0 MBDownloads: 7,141
Source Code ZIPVerified
czkawka-12.0.2-source.zip
Size: GitHub Archive
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Security Verification Status: Verified Memory-Safe Official Binaries
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Latest Release Changelog (12.0.2)
## Version 12.0.2 - 09.09.2026r
### Czkawka GTK Deprecation Notice
**Version 12.0 is the last released version of Czkawka GTK.** No new binaries will be provided from this point on. All users are encouraged to migrate to Krokiet, the new Slint-based GUI frontend.
### Core
- Surfaced rollback rename failures in `make_hard_link`/`make_file_symlink` instead of silently ignoring them - [#1995](https://github.com/qarmin/czkawka/pull/1995)
- Switched the XDG portal trash implementation to `async-io`, avoiding a Tokio runtime requirement alongside Slint's async-io backend - [#2025](https://github.com/qarmin/czkawka/pull/2025)
- Fixed the AVIF license metadata - [#2060](https://github.com/qarmin/czkawka/pull/2060)
- Fixed the AVIF tests - [#2061](https://github.com/qarmin/czkawka/pull/2061)
### CLI
- Rejected non-finite user input (e.g. `NaN`/`inf`) in numeric arguments - [#2038](https://github.com/qarmin/czkawka/pull/2038)
### Krokiet
- Fixed popup OK/Close button text truncation and centered popups more reasonably - [#2043](https://github.com/qarmin/czkawka/pull/2043)
- Added the ability to start a scan in Krokiet via CLI arguments - [#2069](https://github.com/qarmin/
Specifications & Compatibility
Supported Ebook Formats
PDFEPUBMOBIAll File Types
Supported Operating Systems
WindowsLinuxmacOS
Primary LanguageRust / GTK
Software LicenseNOASSERTION
Official Repositoryqarmin/czkawka
Last Checked & Verified2026-11-08 04:50:02 UTC
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