Scott Reilly

By default in WordPress, if the plugin that provides the functionality to handle any given shortcode is disabled, or if a shortcode is improperly defined in the content (such as with a typo), then the shortcode in question will appear on the site in its entirety, unprocessed by WordPress. At best this reveals unsightly code-like text to visitors and at worst can potentially expose information not intended to be seen by visitors.
This plugin prevents unhandled shortcodes from appearing in the content of a post or page. If the shortcode is of the self-closing variety, then the shortcode tag and its attributes are not displayed and nothing is shown in their place. If the shortcode is of the enclosing variety (an opening and closing tag bookend some text or markup), then the text that is being enclosed will be shown, but the shortcode tag and attributes that surround the text will not be displayed.
See the Filters section for more customization tips.
Links: <a href="https://coffee2code.com/wp-plugins/hide-broken-shortcodes/" rel="nofollow ugc">Plugin Homepage</a> | <a href="https://wordpress.org/plugins/hide-broken-shortcodes/" rel="ugc">Plugin Directory Page</a> | <a href="https://github.com/coffee2code/hide-broken-shortcodes/" rel="nofollow ugc">GitHub</a> | <a href="https://coffee2code.com" rel="nofollow ugc">Author Homepage</a>
<h3>Developer Documentation</h3>
Developer documentation can be found in <a href="https://github.com/coffee2code/hide-broken-shortcodes/blob/master/DEVELOPER-DOCS.md" rel="nofollow ugc">DEVELOPER-DOCS.md</a>. That documentation covers the hooks provided by the plugin.
As an overview, these are the hooks provided by the plugin:
<ul>
<li><code>hide_broken_shortcode</code> : Customizes what, if anything, gets displayed when a broken shortcode is encountered.</li>
<li><code>hide_broken_shortcodes_filters</code> : Customizes what filters to hook to find text with potential broken shortcodes.</li>
</ul>

Hide Broken Shortcodes

Prevent broken shortcodes from appearing in posts and pages.

gvanto

This powerful plugin allows you to insert HTML/Javascript code into your WordPress post’s content in a variety of different ways.
Using this plugin, you can specify pre-defined HTML code to be displayed at the top and bottom of all your posts, saving you valuable time. Merge fields let you pre-define HTML/Javascript that you can use anywhere in your post. For example, using [my_twitter] you can include an HTML link to your twitter account, anywhere in your WordPress post.
More more info and screenshots, please see: <a href="http://twoggle.com/wordpress-plugins/content-enhancer" rel="nofollow ugc">Content Enhancer</a> homepage.

Content Enhancer

This plugin allows you to insert html/javascript code into your post's content in a variety of different ways.

Hide Broken Shortcodes vs Content Enhancer