Till Krüss

A lightweight plugin that protects plain email addresses and mailto links from email-harvesting robots, by encoding them into decimal and hexadecimal entities. Has an effect on the posts, pages, comments, excerpts, text widgets and other filtered content. Works without JavaScript — just simple spam protection.
To see whether all your email addresses are properly protected, use the free <a href="https://encoder.till.im/scanner?utm_source=wp-plugin&utm_medium=readme" rel="nofollow ugc">page scanner</a> tool.
Other content (like phone numbers) can be protected using <code>[encode]</code> shortcode:
<pre><code>[encode]+1 (555) 123-4567[/encode]
[encode link="tel:+15551234567"]+1 (555) 123-4567[/encode]
</code></pre>
<h4>Premium Features</h4>
<ul>
<li>Full-page protection that catches all email addresses</li>
<li>Hardened protection using JavaScript and CSS techniques</li>
<li>Improved phone number protection</li>
<li>Built-in plugin support for ACF, Jetpack, WooCommerce and many others</li>
</ul>
Check out the <a href="https://encoder.till.im/download?utm_source=wp-plugin&utm_medium=readme" rel="nofollow ugc">Premium</a> version of Email Address Encoder.
<a href="http://coderisk.com/wp/plugin/email-address-encoder/RIPS-r0bJqKvBws" rel="nofollow ugc"></a>

Email Address Encoder


This might work with page or post content, but does not with widgets. I can't recommend using this and suggest to use the plugin "Email Encoder" by Jannis Thuemming instead, since that does the job out of the box.


Not working with widgets

A lightweight plugin that protects email addresses from email-harvesting robots, by encoding them into decimal and hexadecimal entities.

palicao

This plugin adds a new permalink tag %hashed_id% which represents the encrypted 
version of your post ID. 
Uses hashids library (see http://www.hashids.org/php/).
With this plugin you can change your permalink structure into something like
<pre><code>/%hashed_id%/ 
</code></pre>
to obtain links like
<pre><code>http://www.example.com/B7j1rPk8
</code></pre>
or into something like
<pre><code>/%year%/%monthnum%/%hashed_id%/
</code></pre>
to obtain URLs like
<pre><code>http://www.example.com/2012/10/B7j1rPk8
</code></pre>
or
<pre><code>/%hashed_id%/%postname%/
</code></pre>
to obtain
<pre><code>http://www.example.com/B7j1rPk8/my-slug
</code></pre>
This plugin is useful when you want to obfuscate the number of posts or simply 
if you want an unusual and concise url schema. This is also useful if you want to have 
short URLs without using a third-party service.

WP Hashed IDs

This plugin adds a new permalink tag %hashed_id% which represents the encrypted

Email Address Encoder vs WP Hashed IDs