CyberChef: swiss-army knife conversion tool

Martin Brinkmann
Nov 29, 2016

CyberChef is a free service that you may use locally or online to convert, parse or carry out well over 100 different operations.

What is special about CyberChef is that it is provided as a plain HTML page. You can access it online here, or download a copy to your local system instead to use it even without Internet connection.

The operations that CyberChef supports are mostly useful to programmers and administrators, but may also be useful to students and others occasionally.

One of the main applications of CyberChef is the conversion of one data format into another. It is not the only, as it supports various parsing, code cleanup, and extraction operations as well on top of that.


The supported operations are listed on the left side. Here is a short overview of what CyberChef supports:

  1. Convert data formats, e.g. to and from Hex, Base64, or Binary.
  2. Encrypt or decrypt data using various encryption algorithms.
  3. Public key operations.
  4. Logical operations.
  5. Networking operations, e.g. stripping HTTP headers, parsing IP ranges or URI, or changing the IP format.
  6. Translate data between different character encodings.
  7. Run various operations on text, for instance remove whitespace, sort, add line numbers or find and replace.
  8. Convert between different time formats.
  9. Compress data using various compression formats.
  10. Extract data.
  11. Analyse hashes, or generate them.
  12. Tidy up your code, e.g. CSS minify, JavaScript parser, strip HTML tags.

This is just a small selection of the tools provided by CyberChef.

To use the service, simply open the page online or locally after you have downloaded it to your system. From there it is a matter of selecting the desired operation on the left. You may use the build-in search to find certain operations quickly, or add items to the favorites for quick access at the top.

Operations are sorted into groups, e.g. date / time, that list all when you click on the main group. The date and time group lists five operations for instance: parse Date Time, Translate Date Time format, From UNIX timestamp, To UNIX timestamp, Extract dates.

A double-click loads the selected operation.Some operations ship with so-called recipes which allow you to customize the operation before you get started.

If you select "from UNIX timestamp" for instance, you may switch the input unit format from seconds to milliseconds, microseconds or nanoseconds.

From there you may either enter input manually or by pasting it.

The output is displayed right away without you having to press yet another button on the page. You may save the output to a file, copy it to the clipboard, or switch input and output fields as well.

Closing Words

CyberChef is a handy swiss-army conversion tool that is quite powerful in what it has to offer. The solution is fully portable which means that you can store it anywhere and run it from any location. Since it is a HTML page, it should work on all modern operating systems and in all modern browsers.

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  1. ilev said on August 4, 2012 at 7:53 pm

    Doesn’t Windows 8 know that www. or http:// are passe ?

    1. Martin Brinkmann said on August 4, 2012 at 7:57 pm

      Well it is a bit difficulty to distinguish between domains and files for instance.

    2. Leonidas Burton said on September 4, 2023 at 4:51 am

      I know a service made by google that is similar to Google bookmarks.

  2. VioletMoon said on August 16, 2023 at 5:26 pm

    @Ashwin–Thankful you delighted my comment; who knows how many “gamers” would have disagreed!

  3. Karl said on August 17, 2023 at 10:36 pm


    The comments section under this very article (3 comments) is identical to the comments section found under the following article:

    Not sure what the issue is, but have seen this issue under some other articles recently but did not report it back then.

  4. Anonymous said on August 25, 2023 at 11:44 am

    Omg a badge!!!
    Some tangible reward lmao.

    It sucks that redditors are going to love the fuck out of it too.

  5. Scroogled said on August 25, 2023 at 10:57 pm

    With the cloud, there is no such thing as unlimited storage or privacy. Stop relying on these tech scums. Purchase your own hardware and develop your own solutions.

    1. lollmaoeven said on August 27, 2023 at 6:24 am

      This is a certified reddit cringe moment. Hilarious how the article’s author tries to dress it up like it’s anything more than a png for doing the reddit corporation’s moderation work for free (or for bribes from companies and political groups)

  6. El Duderino said on August 25, 2023 at 11:14 pm

    Almost al unlmited services have a real limit.

    And this comment is written on the dropbox article from August 25, 2023.

  7. John G. said on August 26, 2023 at 1:29 am

    First comment > @ilev said on August 4, 2012 at 7:53 pm

    For the God’s sake, fix the comments soon please! :[

  8. Kalmly said on August 26, 2023 at 4:42 pm

    Yes. Please. Fix the comments.

  9. Kim Schmidt said on September 3, 2023 at 3:42 pm

    With Google Chrome, it’s only been 1,500 for some time now.

    Anyone who wants to force me in such a way into buying something that I can get elsewhere for free will certainly never see a single dime from my side. I don’t even know how stupid their marketing department is to impose these limits on users instead of offering a valuable product to the paying faction. But they don’t. Even if you pay, you get something that is also available for free elsewhere.

    The algorithm has also become less and less savvy in terms of e.g. English/German translations. It used to be that the bot could sort of sense what you were trying to say and put it into different colloquialisms, which was even fun because it was like, “I know what you’re trying to say here, how about…” Now it’s in parts too stupid to translate the simplest sentences correctly, and the suggestions it makes are at times as moronic as those made by Google Translations.

    If this is a deep-learning AI that learns from users’ translations and the phrases they choose most often – which, by the way, is a valuable, moneys worthwhile contribution of every free user to this project: They invest their time and texts, thereby providing the necessary data for the AI to do the thing as nicely as they brag about it in the first place – alas, the more unprofessional users discovered the translator, the worse the language of this deep-learning bot has become, the greater the aggregate of linguistically illiterate users has become, and the worse the language of this deep-learning bot has become, as it now learns the drivel of every Tom, Dick and Harry out there, which is why I now get their Mickey Mouse language as suggestions: the inane language of people who can barely spell the alphabet, it seems.

    And as a thank you for our time and effort in helping them and their AI learn, they’ve lowered the limit from what was once 5,000 to now 1,500…? A big “fuck off” from here for that! Not a brass farthing from me for this attitude and behaviour, not in a hundred years.

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