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Cryptex | E-Mail Address Protection

Cryptex transforms plain-text E-Mail-Addresses into Images - automatically

The Cryptex plugin for WordPress is used to display email addresses - that are normally expressed in plain text - as an image automatically. It works with emails, telephone numbers, postal addresses or any other text-content. This will stop harvesters and crawlers from gathering sensentive data from your website. Just wrap your E-Mail-Address into a shortcode like [email]youraddress@example.com[/email] - that's it. Or use the Autodetect filter to transform every E-Mail-Address on your page automatically into an image!

Plugin Features

  • Fully customizable appearance: you can configure font-family, font-size and font-color - everything looks like your theme style
  • Shortcode and/or Autodetection usage!
  • Build-In E-Mail-Address-Autodetection - all addresses on your page are protected automatically (if you want it - you can also just use shortcodes!)
  • Autodetection filters configurable for the_content, the_excerpt, comments, comments_excerpt
  • Reversible Address-Autodetection Process - your content is modified aslong the plugin is activated
  • Also useable to protect postal-addresses, telephone-numbers, names and other sensitive informations
  • Protects E-Mail hyperlinks (mailto) by using javascript based key-shifting encryption/decryption with dynamic keys - but you can use images only
  • Suitable for high traffic sites - automated caching of dynamic generated images and CSS
  • Native support for MooTools and jQuery is given - all other frameworks/browsers are supported by generic javascript code
  • Automatic font-search (standard system font-paths)
  • Supports the new modern UI style of WordPress 3.8


The @-sign as well as dot's within the e-mail-addresses can be automatically replaced by different placeholders, e.g. mail(at)example{dot}org, to match your website's corporate design.

Security Modes

Cryptex provides various obfuscation modes for E-Mail-Addresses:

  • Plain Text - only text-transformations are applied - no use of images
  • Single Image - the e-mail-address is expressed as a single image
  • Multipart Image - the e-mail-address is splitted into two images, seperated by the @-sign in plain text
  • Advanced Multipart Image - the craziest one: each part (divided by dot's and @ sign) is displayed as a seperate image, the dividers as plain text


Most of your custom cryptex plugin settings get lost on upgrading to the 3.x branch beacause of the new plugin backend structure - please backup them on your own.

Requires: 3.5 or higher
Compatible up to: 3.9.1
Last Updated: 2014-5-3
Downloads: 3,711


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