This is excellent for cleaning up after taking multiple shots of the same subject with your smartphone.

Here is everything you need to know about downloading, extracting, and using this tool to reclaim gigabytes of storage space. What is Czkawka?

Complete Guide to Downloading, Installing, and Using windows-czkawka-gui.zip

. It is recommended to extract it to a dedicated folder (e.g., C:\Tools\Czkawka : Open the extracted folder and launch czkawka_gui.exe

Because it is a .zip file, you can run it from a USB stick or a "PortableApps" folder. It never phones home. Some cleaners require cloud uploads for "similar image analysis"—Czkawka does everything locally.

from random file‑sharing sites – they may bundle malware.

It does not delete files automatically. It presents you with a list of potentials, and you decide what to send to the recycle bin.