Encode Email

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Overview #

Encode Email makes multiple email obfuscation filters available in your templates. Currently supported are:

  1. encode
  2. rot13
  3. entities

Note: All filters return raw HTML so make sure you know your data is clean before you use these filters.

Encode Filter #

The encode filter will encode your email address and make it harder to be picked up off the page by spambots. Under the hood, the encode filter uses the same encoding technique as the Rot13 filter below. encode is just an easier name to remember.

Rot13 #

The rot13 filter encodes the string you pass to it using the Rot13 cipher and returns a javascript tag to decode it on the page.

To use it, you must first create a variable with the entire string you want to encode as a Twig string, and then run the rot13 filter on the variable you created:

{% set email = "<a href='mailto:[email protected]'>Your Name</a>" %}

{{ email | rot13 }}

To use this filter for email, your entire link tag must be wrapped in the filter. This is necessary because the filter returns a script tag and will break your link tag if you only include the email address itself. The rot13 filter will return code similar to the following example in your page code, however, your visitors will see the link tag as you defined it above.

<script type="text/javascript">document.write("<n uers=‘znvygb:[email protected]>Lbhe Anzr</n>".replace(/[a-zA-Z]/g, function(c){return String.fromCharCode((c<="Z"?90:122)>=(c=c.charCodeAt(0)+13)?c:c-26);}));</script>

HTML Entities #

The entities filter encodes your content into HTML Entities. If you filter your email information with it like so:

<a href='{{ "mailto:[email protected]" | entities }}'>Your Name</a>

The code on your page will be output as HTML Entities, but your visitors will see the information that you defined above:

<a href='&#109;&#97;&#105;&#108;&#116;&#111;&#58;&#121;&#111;&#117;&#64;&#101;&#120;&#97;&#109;&#112;&#108;&#101;&#46;&#99;&#111;&#109;'>Your Name</a>

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