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qarmin
czkawka
Fluent2021–2026
qarmin / czkawka

czkawka

Multi functional app to find duplicates, empty folders, similar images etc.

28Distinct people
31Mentions
1Explicit recommenders
35.1KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Multi functional app to find duplicates, empty folders, similar images etc.

GitHub

Where it is used

No documented product use was verified in the last source check.

What people are saying

Same. One of my favorite duplicate file/similar image finders is https://github.com/qarmin/czkawka But I will never ever remember how to spell the name. It’s like the perfect…

Modified3019 used a recommendation phrase. One indexed comment matches. This is a phrase match, not a verdict.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year31 dated mentions

Observed mentions: 2021-03-13 13:05:34 UTC to 2026-07-26 12:27:55 UTC.

02462021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 5 mentions; 1 submissions, 4 comments20212022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 6 mentions; 3 submissions, 3 comments2023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 7 mentions; 1 submissions, 6 comments20232024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 6 mentions; 1 submissions, 5 comments2025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 4 mentions; 0 submissions, 4 comments2026-01-01 00:00:00 UTC to 2027-01-01 00:00:00 UTC (exclusive): 3 mentions; 1 submissions, 2 comments. Incomplete calendar period.2026*

* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC514
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC633
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC716
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC615
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC404
2026 (partial)2026-01-01 00:00:00 UTC2027-01-01 00:00:00 UTC312

What Hacker News says

31 sources
It's mostly what I use daily or a lot (except one these are not recurring; I will try to make these recurring once I am financially there again): - https://objective-see.org/support.html (For https://github.com/objective-see/LuLu et al) - https://www.thunderbird.net/donate (I hope none of it goes to Mozilla or Firefox. I also hope https://thundermail.com brings something than I can instead pay for, if I can or will decide to afford, instead of intermittent donations) - https://www.borgbackup.org/support/fund.html (I would want to support https://restic.net as well as I use it so much but they never setup a way - it has been discussed :/) - https://syncthing.net/donations - https://github.com/Homebrew/brew#donations - https://cryptomator.org/donate/ - https://www.patreon.com/db4s - https://github.com/sponsors/qarmin for https://github.com/
Read the rest
qarmin/czkawka - https://github.com/sponsors/garethgeorge for https://github.com/garethgeorge/backrest - https://keepass.info/donate.html and https://keepassium.com/donate (Mostly the latter) (I had actually moved to StrongBox which did a U-turn on FOSS and then sold to another company. At that point I came back to KeePassium. The KeepPassium author actually took a stand a went FOSS as a principle. I think this is worth noting.) ..and few more. … … # The ones I support by paying for one of its services bust mostly because its FOSS app: - https://vorta.borgbase.com - http://ente.io (But sadly not for long; because I really can't stand a non-native "photos" app. I just can't! Otherwise it's a great service!)
In Ask HN: What projects do you donate to?
There's Czkawka, Polish for "hiccup" application that helps find duplicates [1], dev behind it also created files renamer Szyszka, again "cone" in Polish [2]. Backup solution Kopia [3] mean "copy" but also "lance" and "spear" hence the pointy thing in its logo - if I recall correctly one of devs is Polish. [1] - https://github.com/qarmin/czkawka [2] - https://github.com/qarmin/szyszka [3] - https://github.com/kopia/kopia That's all what I can remember. I wouldn't count KDE apps that do sound Polish or Slavic just because they "had" to replace initial letter with K to keep the leading theme. Then people behind MATE desktop on the other hand named apps in their project using Spanish words, e.g. file manager Caja - "box" or "case", documents reader Atril - "lectern" or "music stand" As for Japanese words usage, it's still the outcome of anim
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e&manga wave that bloomed in the end of 90s. What I find surprising is that nothing comparable happen when k-pop and k-dramas rise to popularity - there's a significant fascination of South Korean culture but not as intensive that would show interest in using vocabulary in the West as that happens with Japan. Perhaps mukbang, "eating broadcast" is the only exception.
In Umami is a simple, fast, privacy-focused alternative to Google Analytics
You want content-addressed storage; this works with rolling content hashes that identify common blocks of memory. `rsync` uses that technique to minimize bytes to be transferred. https://github.com/qarmin/czkawka is a GUI app and CLI tool to find identical files in general and similar images in particular. The task is much simpler if you only want to find bit-identical entire files, not part of files; in that case, you can just run a tool like `sha1sum` over each file and record the hash digest in a database; identical files—and only identical ones, with high probability—will have the same hash, non-identical ones will have different hashes.
In Ask HN: How do you deduplicate fuzzy files?
I used to use DupeGuru which has some photo-specific dupe detection where you can fuzzy match image dupes based on content: https://dupeguru.voltaicideas.net/ But I switched over to czkawka, which has a better interface for comparing files, and seems to be a bit faster: https://github.com/qarmin/czkawka Unfortunately, neither of these are integrated into Photoprism, so you still have to do some file management outside the database before importing. I also haven't used Photoprism extensively yet (I think it's running on one of my boxes, but I haven't gotten around to setting it up), but I did find that it wasn't really built for file-based libraries. It's a little more heavyweight, but my research shows that Nextcloud Memories might be a better choice for me (it's not the first-party Nextcloud photos app, but another one put together by th
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In PhotoPrism: AI-powered photos app for the decentralized web

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