kareemzok

Splash header in WordPress will let you to create a welcome screen that contain title, description, custom links, or any custom code and can be added anywhere in your website using shortcode
Features:
<ul>
<li>Welcome note with title and message</li>
<li>Add up to 6 custom links with an option to insert a font icon instead of an image</li>
<li>Ability to chose if the links open in the same or new browser tab</li>
<li>Ability to add custom code such as html or wordpress shortcode code</li>
<li>Ability to style the splash header with color, font size, and border style</li>
<li>Ability to add a current date in different format</li>
</ul>
Demo link to preview (the box in yellow): <a href="https://www.techwebies.com/about-us/" rel="nofollow ugc">Techwebies</a>
Bug Reports
<blockquote>
Bug reports for Splash Header are also <a href="https://github.com/kareemzok/splash-header" rel="nofollow ugc">welcomed on GitHub</a>.
Please note GitHub is not a support forum, and issues that aren’t properly qualified as bugs will be closed. 
 Support or help is welcomed by sending email to info@zeesweb.com.
</blockquote>
Problems and Support
<blockquote>
To get faster response You can create a Topics our Website <a href="https://wordpress.org/support/plugin/splash-header" rel="ugc">Support Forum</a> Contact Page.
If you have any query about Splah Header then please check our <a href="https://wordpress.org/plugins/splash-header/faq/" rel="ugc">F.A.Q.</a>
</blockquote>

Splash Header

Very useful plugin . already using it on techwebies.net

Very usefull

This plugin show a splash header welcome screen

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.

Splash Header vs Hide Broken Shortcodes