Darren Kandekore

<p>Manage and clean up duplicate WordPress posts with ease. Delete duplicates in bulk, assign 301 redirects, and generate <code>.htaccess</code> rules — all from one simple interface.</p>
<h3>Features</h3>
<ul>
<li>Detect duplicate posts by <strong>title</strong> and <strong>slug</strong></li>
<li>Display all duplicates in a table (with checkboxes)</li>
<li>Per-post redirect options:</li>
<li>Choose from other duplicates in a dropdown</li>
<li>Enter a custom redirect URL manually</li>
<li>Validate redirect targets before deleting</li>
<li>Redirect deleted posts using 301 rules</li>
<li>Save posts to <strong>trash</strong>, not permanent delete</li>
<li>Generate <code>.htaccess</code> rules for all redirects</li>
<li>Copy/paste or export redirects as needed</li>
</ul>
<h3>How to Use</h3>
<ol>
<li>Go to <strong>Tools > Duplicate Post Manager</strong></li>
<li>Click <strong>Scan for Duplicates</strong></li>
<li>Review the table of duplicate posts</li>
<li>For each post:
<ul>
<li>Check the box to delete it</li>
<li>Choose a redirect target (dropdown or custom URL)</li>
</ul>
</li>
<li>Click <strong>Delete Selected & Redirect</strong></li>
<li>Scroll down to copy or export your <code>.htaccess</code> redirect rules</li>
</ol>
<h3>Redirect Format</h3>
<p>The plugin generates Apache <code>.htaccess</code> rules like:</p>
<p>Redirect 301 /old-slug /new-slug<br />
Redirect 301 /another-old /new-target</p>
<ul>
<li>All redirects use <strong>relative paths</strong> for portability.</li>
<li>Only valid (non-404) redirects are saved.</li>
</ul>
<h3>Why Use It?</h3>
<ul>
<li>Prevent SEO penalties from duplicate content</li>
<li>Control user redirection after cleanup</li>
<li>Maintain your site’s authority by preserving link equity</li>
<li>Clean and update old auto-imported posts or legacy content</li>
</ul>
<h3>Technical Notes</h3>
<ul>
<li>Uses WordPress core functions (<code>get_posts</code>, <code>get_permalink</code>, <code>wp_trash_post</code>)</li>
<li>Compatible with Classic Editor and Block Editor (Gutenberg)</li>
<li>Does not delete posts permanently</li>
<li>Nonce-verified form for security</li>
</ul>
<h3>License</h3>
<p>This plugin is licensed under the <a href="https://www.gnu.org/licenses/gpl-2.0.html" rel="nofollow ugc">GPLv2</a> or later.</p>
<h3>Coming Soon (Ideas)</h3>
<ul>
<li>Export <code>.htaccess</code> as a downloadable file</li>
<li>Custom post type support</li>
<li>Integration with Redirection plugins</li>
<li>Inline AJAX validation of manual URLs</li>
</ul>
<h3>Author</h3>
<p><a href="https://darrenk.uk/" rel="nofollow ugc">Darren Kandekore</a></p>


Kandeshop Duplicate Post Manager

Manage and clean up duplicate WordPress posts with ease. Delete duplicates, assign 301 redirects, and generate .htaccess rules.

blackmelvyn

<p>This plugin has been developed by BlackMelvyn from this <a href="http://www.theblackmelvyn.com/" title="SEO Black Hat blog" rel="nofollow ugc">SEO Black Hat</a> blog in order to prevent publication of duplicate posts.</p>
<p>It has a double use :</p>
<ul>
<li>clear duplicate posts</li>
<li>save database space by getting rid of previous versions</li>
</ul>
<p>The plugin will search for duplicate titles upon post publication and remove duplicate entries from the database.<br />
There is no admin panel, just activate the plugin and let it do the rest 😉<br />
Read the source code 😉</p>


Author: BlackMelvyn

This plugin prevents duplicate posts to be published, especially when running autoblogs.

Kandeshop Duplicate Post Manager vs Author: BlackMelvyn