RUruairidhwm·Jul 21, 2026
Nice! Reminds me a little of https://github.com/gchq/CyberChef
In Show HN: QuiverKit – 62 developer tools that run offlinegchq
CyberChef
JavaScript2016–2026
gchq / CyberChef
CyberChef
The Cyber Swiss Army Knife - a web app for encryption, encoding, compression and data analysis
35Distinct people
42Mentions
0Explicit recommenders
36.4KGitHub stars
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What it is
The Cyber Swiss Army Knife - a web app for encryption, encoding, compression and data analysis
GitHub
Where it is used
No documented product use was verified in the last source check.
What people are saying
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This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:56:07 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 year42 dated mentions
Observed mentions: 2016-11-28 16:40:36 UTC to 2026-07-21 11:58:28 UTC.
* 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
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2016 | 2016-01-01 00:00:00 UTC | 2017-01-01 00:00:00 UTC | 3 | 0 | 3 |
| 2017 | 2017-01-01 00:00:00 UTC | 2018-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 2 | 1 | 1 |
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 7 | 4 | 3 |
| 2020 | 2020-01-01 00:00:00 UTC | 2021-01-01 00:00:00 UTC | 5 | 1 | 4 |
| 2021 | 2021-01-01 00:00:00 UTC | 2022-01-01 00:00:00 UTC | 3 | 0 | 3 |
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 7 | 1 | 6 |
| 2023 | 2023-01-01 00:00:00 UTC | 2024-01-01 00:00:00 UTC | 5 | 2 | 3 |
| 2024 | 2024-01-01 00:00:00 UTC | 2025-01-01 00:00:00 UTC | 7 | 2 | 5 |
| 2025 | 2025-01-01 00:00:00 UTC | 2026-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2026 (partial) | 2026-01-01 00:00:00 UTC | 2027-01-01 00:00:00 UTC | 2 | 1 | 1 |
What Hacker News says
42 sourcesCyberchef: A Web App for Encryption, Encoding, Compression and Data Analysis
3 points · Open discussionMost of these tools are also available in CyberChef, with the advantage that you can combine multiple steps to create data transformation pipelines.
https://github.com/gchq/CyberChef
In Show HN: HashCodeTools – 17 Free Privacy-Focused Dev ToolsJust in case you need it: https://github.com/gchq/CyberChef
I was just trying to be helpful, since it was relevant to content in the post…
In Everything I built with Claude Artifacts this weekCyberChef: A web app for encryption, encoding, compression and data analysis
2 points · Open discussionCyberChef – The Cyber Swiss Army Knife
1 points · Open discussionCuriously, there is a similar tool made by GCHQ (UK's intelligence) https://github.com/gchq/CyberChef which I don't use neither because of trust issues (even though it's open source)
In DevHub.app – Developer Utilities for macOSThere's a lot of CyberChef hosted domains that aren't hosted by GCHQ. It's open source, so they're doing nothing wrong, but we can't provide assurances about the code on those sites. The official URL is https://github.com/gchq/CyberChef.
In Open-source utils for devs who don't like adsCyberChef supports offline usage, just save the page!
If you want a "quick" way to add a bunch more operators, all of ours are available via the 'cyberchef' NPM package[0] and the license permits embedding into other applications.
[0] https://github.com/gchq/CyberChef/wiki/Node-API
In Show HN: VS Code Extension to skip the noisy web tools (JSON Prettify, and more)It uses a combination of magic bytes (like the `file` command), entropy analysis and character frequency detection to determine whether an output is likely to be of interest to the user.
The file type mechanism is written here[0]. There's a list of all signatures we detect here[1]. The magic implementation is here[2].
[0] https://github.com/gchq/CyberChef/blob/master/src/core/lib/F...
[1] https://github.com/gchq/CyberChef/blob/master/src/core/lib/F...
[2] https://github.com/gchq/CyberChef/blob/master/src/core/lib/M...
In CyberChef from GCHQ: Cyber Swiss Army KnifeMany of the use cases mentioned are available through a single tool called CyberChef.
There is an online version [1] but it doesn't submit any data to any servers. It only loads JS for the operations it needs to perform.
You can also download it and run it offline [2]. This is what I do.
I'll leave it up to you to decide if this makes QuaranTab unnecessary or if it's the perfect reason to use QuaranTab.
[1] https://gchq.github.io/CyberChef/
[2] https://github.com/gchq/CyberChef/releases/
In Show HN: Firefox addon to quarantine a tab to use offline with private data> Firstly, employees need to be aware that they are not allowed to use this software and you need to therefore provide a solution.
As far as I understand, the usage of such tools is caused by the need to accomplish some goal that they don't know how to otherwise do. Therefore, wouldn't it be a good idea to self-host such a tool, even if it's not a part of any pre-existing platform that's in use for other business processes?
For example, for various data format related concerns, I've seen CyberChef be pretty good: https://github.com/gchq/CyberChef
As for some binary file format conversations, HRConvert2 seems viable: https://github.com/zelon88/HRConvert2
If self-hosting things is too much of a bother/risk, then I guess all that's left is local tools, such as Handbrake on Windows for video: https://handbrake.fr/ and maybe something like XnV
Read the rest
iew for images: https://www.xnview.com/en/ and so on...
But then there's the risks of self-hosted or local software containing something malicious and needing to be audited etc. I recall that in my previous org, I helped develop a Wiki page listing many of the tools available within the company internally, so that anyone who needs to store files could immediately look at self-hosted Nextcloud (for example), as opposed to going for Dropbox or whatever. Of course, instructions alone probably aren't enough, restrictions are also necessary, but discoverability is always good!
Discussed 1 year ago:
https://news.ycombinator.com/item?id=29982286 (54 comments)
Full source code is here:
https://github.com/gchq/CyberChef
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