Czkawka — The Complete Guide: Find Duplicate Files and Similar Images on the Project Server
Czkawka, by Rafał Mikrut, is an open-source tool for finding duplicates and junk on a disk, for Windows, macOS and Linux. The core and the older interface are under MIT, the new Krokiet interface under GPL-3.0. It is free for any use, does not go online and collects no data.
Czkawka / Krokiet
Rafał Mikrut (qarmin)
Finds duplicate files, similar images and videos, empty folders and big files, in a fast open-source tool with no ads.
Get it from the vendorWhat you get
- Duplicate files — by name, size or content, including the same drawings and PDFs saved in several folders.
- Similar images and videos — site photos saved at different sizes.
- Duplicate music — by tags or content.
- General cleanup — empty folders and files, huge files and broken links.
- Wrong extensions — files whose extension does not match their content.
Deleting duplicates safely
On a project server, a duplicate is sometimes the version that was submitted to the client. Back up before a bulk delete, choose by hand in each group which copy stays, and prefer moving to the trash. Use the Krokiet interface, because the older GTK interface will not get new releases.
Related tools
For temporary files and caches — BleachBit. For a visual map of what takes the space — QDirStat on Linux or WizTree on Windows.
BleachBit
Andrew Ziem and contributors
Cleans temporary files, browser caches and logs to free disk space, with a preview and secure deletion. No ads and no Pro edition.
Get it from the vendor
QDirStat
Stefan Hundhammer
A WinDirStat-style disk-usage map for Linux: a folder tree and a coloured treemap that show what takes up space.
Get it from the vendor
WizTree
Antibody Software
An extremely fast disk-space analyser — finds huge model, mesh and result files in seconds.
Get it from the vendor
Filelight
KDE
An interactive ring map of disk usage from KDE, for Linux and Windows, to spot heavy folders quickly.
Get it from the vendorThe bottom line
The most complete free duplicate finder, fast even on large drives, and completely free of ads.