Concise Studio

<h4>Algorithm</h4>
<ol>
<li>Plugin generates token on the backend side.</li>
<li>Plugin adds hidden field for token in each form which will use method “POST” after rendering of the page.</li>
<li>Plugin inserts token in the field after user’s interaction with site.</li>
</ol>
<h4>For developers</h4>
<p>Antispam will automatically check submissions of the regular forms but ignores all AJAX requests.<br />
If you want to change this behaviour, you can use filter <code>concise_antispam_need_to_validate_token</code>.<br />
See example:</p>
<p><em>Disable Antispam for some forms:</em></p>
<pre><code>add_filter("concise_antispam_need_to_validate_token", function($needToValidateToken) {
    if (!empty($_POST['do-not-check-antispam-token'])) {
        $needToValidateToken = false;
    }

    return $needToValidateToken;
});
</code></pre>
<p>You can also always manually call <code>\Concise\Antispam::validateTokenOrDie()</code> in your custom handler.</p>
<h3>Formidable Forms integration</h3>
<p>For proper work disable the honeypot checking in the forms</p>


Concise Antispam

Very simple antispam plugin. Users do not need to enter any captcha, working completely on background. No need to administer: just install the plugin  …

Till Krüss

<p>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.</p>
<p>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.</p>
<p>Other content (like phone numbers) can be protected using <code>[encode]</code> shortcode:</p>
<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><strong>Full-page protection</strong> that catches all email addresses</li>
<li><strong>Hardened protection</strong> using JavaScript and CSS techniques</li>
<li>Improved <strong>phone number</strong> protection</li>
<li>Built-in plugin support for <strong>ACF</strong>, <strong>Jetpack</strong>, <strong>WooCommerce</strong> and many others</li>
</ul>
<p>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.</p>
<p><a href="http://coderisk.com/wp/plugin/email-address-encoder/RIPS-r0bJqKvBws" rel="nofollow ugc"></a></p>


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.

Concise Antispam vs Email Address Encoder