Czkawka Review: Is It Safe, and What Are the Alternatives? (2026)

What Czkawka Does

Czkawka (Polish for “hiccup”) is a multi-tool cleaner written in Rust, maintained by its creator on GitHub, and released under open-source licenses. It is fast because it scans on several threads and keeps a cache, so a second scan of the same drive finishes much sooner than the first. Its README also states that it has no ads, does not use the internet, and collects no statistics.

Duplicates are only one of its tools. The current version includes:

• Duplicates, matched by file name, by size, or by content hash. The hash method is the one that finds true copies.
• Similar Images and Similar Videos, which find look-alike media such as resized or re-encoded copies.
• Same Music, which groups songs by tags or audio content.
• Empty Folders, Empty Files, Big Files, and Temporary Files for freeing space.
• Invalid Symbolic Links, Broken Files, Bad Extensions, and Bad Names for finding damaged or mislabeled files.
• Exif Remover and Video Optimizer, added in recent releases.

Results appear in groups. You select files, then delete them, move them to the trash, or move or copy them to another folder. The engine can also replace duplicates with hard links or symbolic links, which frees space while keeping every path working.

Czkawka vs Krokiet: Which One to Download

The GitHub releases list several programs, which confuses many first-time users. They share one scanning engine:

• Krokiet is the newer desktop interface and the one the project now recommends. Download this one.
• Czkawka GTK is the original interface. It is in maintenance and no longer gets new binaries.
• czkawka_cli is the command-line version for scripts and servers.

On Windows and Mac you download a standalone build from the Releases page. On Linux, Flathub is the simplest route. If a guide or video shows a different-looking window, it is probably the older GTK app.

Is Czkawka Safe?

Yes, with two caveats. The code is public, the official builds have no bundled offers, and nothing happens to your files until you select them and choose an action. The risks are elsewhere:

• Unofficial downloads. The project says it has no official website, yet several sites rank for “Czkawka download”. Get it from the qarmin/czkawka GitHub releases or Flathub only.
• The wrong copy. Automatic selection rules such as “select all except oldest” decide which file in each group is removed. If the copy you use is newer or sits in a different folder, a quick select-all can remove it. This is the most common complaint in forum threads, and it is avoidable.
• Similarity tools are guesses. Similar Images, Similar Videos, and Same Music group files that look or sound alike. Two different photos from a burst can land in the same group. Only the hash method in the Duplicates tool guarantees identical files.

How to Use Czkawka Without Deleting the Wrong Copy

1. Download Krokiet from the official source. GitHub releases on Windows and Mac, Flathub on Linux.
2. Add folders and set a reference folder. Add every folder you want to scan and mark your main working folder as a reference. Files in it are used for matching but are not offered for removal.
3. Open the Duplicates tool and keep the hash method for exact matches. Name and size matches are quicker but can group files that only share a name or a size.
4. Check each group by hand before you use a bulk selection rule, at least for the first few groups, so you see which copy the rule keeps.
5. Move to the trash or a holding folder instead of deleting permanently. Open the projects that used those files, and empty the trash only when nothing is missing.
6. Save the results list before acting if you want a record of what you removed.

Where Czkawka Falls Short

• Busy interface. Fourteen tools in one window is a lot if you only want to clear duplicate downloads.
• Moving target. Frequent releases bring new features but also renamed buttons and cache format changes, so older tutorials go stale quickly.
• Community support only. Problems go to GitHub issues and discussions; there is no vendor help desk.
• No verification trail. A saved result list is not the same as a report of what was moved, a one-step undo, or proof that every other file is unchanged. That matters for client files, shared drives, and backups.

Czkawka Alternatives Compared

dupeGuru: the older free option

dupeGuru is also free, open source, and cross-platform. It has fewer tools and releases less often, but its three modes (standard, music, picture) are easy to understand and its Reference folder workflow is well documented. Our dupeGuru review covers safe-use steps.

Our free Find Duplicates tool: a quick check

If you only need to know whether a few files are the same, Find Duplicates takes up to 10 files (10 MB each), hashes them in memory on our server, and shows which are identical. Files are not stored. It is not a folder scanner; for whole drives you need a desktop app.

FolderManifest: exact matches with a plan you approve

FolderManifest hashes each file with SHA-256 and groups only files whose content is identical, so renamed copies are caught and two different files are never grouped. Instead of selection rules, you review a plan, approve what moves, can undo it, and keep a report of what changed. The same app compares folders, watches them for changes, and verifies backups and migrations with SHA-256 manifests, which helps when the duplicates came from a copy that ran twice. It runs locally on Windows, Mac (Apple Silicon and Intel), and Linux; on a Mac you can download the Apple Silicon build directly.

Frequently Asked Questions

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