email-cloack is a simple JavaScript library to obfuscate an email address in
NodeJS and in the browser.
It's a JavaScript porting of the PHP script by Carlo Perassi available at https://perassi.org/quickhacks/aec/aec.txt
Motivations behind this technique are available on archive.org at http://web.archive.org/web/20110221010757/http://perassi.org/2007/09/24/an-accessible-email-cloaking-technique/
I’ve found a good list of techniques to achieve this task but when you can’t use anything like CSS, images or > JavaScript it’s harder so I’ve written a small PHP script that uses two techniques:
- writing everything (text and email) directly in hexadecimal;
- putting, between each character of the text, a (X)HTML comment with random content (‘@’ or ‘>’ as suggested).
In other words, calling
$email = '[email protected]'; $testo = 'text to show'; echo oemail($email);would show something like the source of this file.
The result is not enough to save your life but it can be a decent method, though.
You can download it here.
As an example, the result of cloacking the email address [email protected] is:
<a
href="mailto:carlo@some.where"
>
c<!-- > -->a<!-- > -->r<!-- > -->l<!-- > -->o<!-- > -->@<!-- > -->s<!-- @ -->o<!-- @ -->m<!-- @ -->e<!-- > -->.<!-- > -->w<!-- @ -->h<!-- @ -->e<!-- > -->r<!-- @ -->e<!-- @ --></a
>(See the source code of: http://perassi.org/quickhacks/snippets/aec/aec1.html)
npm install email-cloackconst { oemail } = require("email-cloack");
// returns an anchor tag with the scrambled email address as "mailto" and as
// content of the tag itself.
// e.g. <a href="mailto:[email protected]>[email protected]</a>
oemail("[email protected]");
// returns an anchor tag with the scrambled email address as "mailto"
// and "Contact us" as inner text
oemail("[email protected]", true, "Contact us");
// return just the scrambled email address, with no enclosing <a> tag.
oemail("[email protected]", false);Please note that this technique is not 100% spammer proof. Valid - or even better - alternative techniques can be, for example, obfuscation with CSS using
unicode-bidi: bidi-override;
direction: rtl;See for example: https://elizavetasemenova.github.io/blog/2016/12/02/obfuscate-email-with-CSS
email-scramble module, available at
https://www.npmjs.com/package/email-scramble
Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.
Please make sure to update tests as appropriate.