Michael Ott

<p>It’s often too easy to make edits to your web site that result in a broken link. This plugin will automatically email the web site administrator (or a specified email address) whenever a 404 is encountered, along with a link to the page the 404 originated from. With this knowledge in hand, you can search the page for the problem and either remove or fix it.</p>
<p>Notifications are also triggered by missing media, such as images, video, CSS files and more.</p>
<h3>Support</h3>
<p>Report any issues at the official <a href="https://wordpress.org/support/plugin/404-notify/" rel="ugc">404 Notify Support</a> WordPress page.</p>
<h3>How to use</h3>
<p>Once activated, notifications are automatially sent to the site administrator, or, you can specify an alternative email address in <strong>Settings</strong> -> <strong>General</strong> and look for the <strong>404 Notify email address</strong> field.</p>
<h3>Uninstall</h3>
<p>Deactivate the plugin, delete if desired.</p>


404 Notify

It works as presented. When an internal link leads to 404 you get an email alert. 

Job well done

Get a notification whenever a 404 is encountered on your web site.

jidaikobo

<p>jwp-a11y checks the accessibility of WordPress post content while you edit and save posts.</p>
<p>It helps editors notice accessibility issues earlier in the writing workflow and keeps legacy public result pages available through the existing <code>[jwp_a11y_results]</code> shortcode.</p>
<p>This version focuses on three practical tasks:</p>
<ul>
<li>checking post content with <code>jidaikobo/a11yc</code> while editing,</li>
<li>showing previously saved public result pages through <code>[jwp_a11y_results]</code>,</li>
<li>providing reading material for understanding accessibility criteria through the admin tools page and <code>[jwp_a11y_doc]</code>.</li>
</ul>
<p><a href="https://translate.wordpress.org/projects/wp-plugins/jwp-a11y" rel="nofollow ugc">translate by using GlotPress</a></p>


jwp-a11y

Check the accessibility of WordPress post content while editing.

404 Notify vs jwp-a11y