Stefano Picco

Copy&Paste Cleaner. If you want to quickly fill a post or a page with content that already exists, copy&paste is often used and it can destroy the layout of a website!
The basic problem is that if you copy&paste content from different sources into the visual editor, any formatting is copied over. Specifically, whether from text documents, other websites, online-shops and cms or even from social media, something comes along everywhere.
As there are often DIVs in addition to harmless HTML elements, these can cause the rendering of your own website to be faulty or interrupted.
To avoid this, this plugin checks the existing formatting and attributes and removes all those that could lead to a problem and then saves it directly.
If you copy and paste into the text editor, there is usually no problem.
Tested with these page builders:
<ul>
<li>Classic editor</li>
<li>Gutenberg</li>
<li>Divi 4.27</li>
<li>Elementor 3.33</li>
<li>WPBakery 8.7</li>
</ul>
Privacy GDPR
This plugin processes the analyzed and converted HTML only within the respective website. No content is stored or transferred to other servers or services for processing. Data protection in accordance with the GDPR is therefore guaranteed at all times.

Remove layout destroying HTML-Tags

Copy&Paste Cleaner. Cleanup the code in post and page editor after using copy&paste content from different sources and automatic saving.

Nikunj Soni

WordPress itself does a job of filtering dangerous code inside your content. 
But your users can break your site design without compromising your security by inserting unnecessary HTML tags in post, page or in custom post type.
This plugin removes unnecessary HTML tags from post, page and custom post type content before inserting it to your WordPress database. 
It also prevents users to paste or write disallowed HTML tags in post content.
If your website users creates content for you and if they copy the content from some other webpages, then in that situation this plugin will be helpful to you to disallowed unnecessary HTML tags.
<ul>
<li>
This plugin will only allow the below HTML tags :
p, h1, h2, h3, h4, h5, h6, ol, ul, li, ins, blockquote, 
cite, code, em, b, i, u, q, strike, strong, br, hr, 
abbr (allowed attributes: title), 
acronym (allowed attributes: title), 
a (allowed attributes: href, title), 
img (allowed attributes: src, alt, class, width, height), 
del (allowed attributes: datetime)
</li>
</ul>
Usage :
<ol>
<li>Download and extract this plugin to <code>wp-content/plugins/</code></li>
<li>Activate the plugin through the ‘Plugins’ menu in WordPress and enjoy !</li>
</ol>
<h3>Amazing Features</h3>
<ul>
<li>Easy to use</li>
<li>File is easy customizable ( you can add your tag in secure-paste.php file )</li>
</ul>

Secure Paste

Secure your post by removing unnecessary HTML tags from post, page and custom post type content before inserting it to your WordPress database.

Remove layout destroying HTML-Tags vs Secure Paste