Mushlih Almubarak

If someone copies an article on your site, then when that person pastes it, there will be additional text in the pasted text, and you can set with this plugin what text will appear if someone copies the article from your site.
This plugin is created and designed as simple as possible, so as not to burden your site, even the size of this plugin is not up to 1 MB!

Insert Link Reference In Copied Text

This plugin will add a reference from which site someone copied a text.

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.
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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)
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Usage :
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<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>
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<h3>Amazing Features</h3>
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<li>Easy to use</li>
<li>File is easy customizable ( you can add your tag in secure-paste.php file )</li>
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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.

Insert Link Reference In Copied Text vs Secure Paste