WARNING!! we have not yet been contacted by NSA/USA/UK to provide a backdoor to our encryption service... but its only a matter of time until it happens.
Note: we will keep this notice up-to-date so please check this website regularly.


ROT13 ("rotate by 13 places", sometimes hyphenated ROT-13) is a letter substitution cipher that replaces a letter with the letter 13 letters after it in the alphabet.

ROT13 is an example of the Caesar cipher, developed in ancient Rome.

For more information on ROT13 see http://en.wikipedia.org/wiki/ROT13

ROT26 is just like ROT13 but twice as secure!


Instead of only rotating 13 places, ROT26 rotates twice as many characters in the alphabet and is therefore twice as secure.

ROT26 encryption & decryption is very complex and requires a powerful, purpose-built super-computer to perform all the calculations... which we have created.

So, to encourage more developers to use ROT26 in their mobile, web and PC software applications we are offering a very easy to use and totally free ROT26 encryption and decryption REST web service.

ROT26.org web service

(our super-computer looks like this)
Make the following HTTP request to encrypt a message:

http://api.rot26.org/encrypt/{message to encrypt}

eg. http://api.rot26.org/encrypt/encrypt me
(opens in a new window)

Make the following HTTP request to decrypt a message:

http://api.rot26.org/decrypt/{message to decrypt}

eg. http://api.rot26.org/decrypt/decrypt me
(opens in a new window)

This web service is free to use under the ROT26 v2.1 user license

AJAX Example: (using above web service)

Plain text ROT26

Your support

If you use this web service regularly, please consider donating here:

With enough donations we are hoping to not only cover our infrastructure costs (including the continual replacement of flux capacitors), but also achieve the following:

  • provide additional web service standards, including:
    • oData
    • SOAP v1
    • SOAP v2
  • maintain mobile phone SDKs for easy implementation into your new or existing projects, including:
    • iOS
    • Android
    • Windows Phone
    • Blackberry
  • batch processing (allowing you to send multiple messages at once)
  • detailed technical documentation, including:
    • getting started guides
    • FAQs
    • various sample code

Your donations will help us get there!

ROT26 v2.1 user license

Thou shalt not use this service in the following situations:
  1. building weapons of mass destruction
  2. aiding terror organisations
  3. murdering kittens
All other uses are fine.

We try to maintain 100% up-time, however if our service is slow or offline... please just wait.

Any harm caused by using our service or ROT26 encryption in general would be considered hilarious. Please tell us about it!

If any claims arise from the use of our service or ROT26 encryption in general, any judge would deem the person making the claim an idiot and dismiss the case.


This is a project.