Mike

As a logged in user, you can already control the visibility of the WordPress Toolbar when modifying your profile with the ‘Show Toolbar when viewing site’ option. This plugin lets you manage that option while viewing the public part of the site without visiting your profile page saving you a few steps. A few steps over the course of a year can be a considerable saving.
To use, add the following to the end of your URL location:
<ul>
<li>?hidebar or ?nobar to hide the Toolbar</li>
<li>?showbar or ?yesbar to show the Toolbar</li>
</ul>
If you have a ? in the URL already, swap it with a &
This plugin differentiates itself by having a zero footprint. It does not leave any visible buttons, add any extra javascripts or CSS styles. It is also WordPress Network compatible – that is, you can enable it network wide.
Collaborate, participate, or fork this plugin on <a href="https://github.com/zedzedzed/toggle-toolbar" rel="nofollow ugc">Github</a>.

Toggle Toolbar

Easily toggle the WordPress Toolbar by adding commands to the end of your URL while logged in.

Gary Jones

Brady Vercher

Cedaro

For those times when you’re too lazy to visit the Plugins screen to toggle a plugin on or off.
It’s also helpful when troubleshooting:
<blockquote>
This simple plugin is awesome, especially when it comes to diagnosing problems. One of the tenants of troubleshooting WordPress is to disable every plugin and re-enable them one by one in a process of elimination.
Generally, this is accomplished by having the plugin management page in one browser tab with the front end of the website in another. When a plugin is deactivated, switch browser tabs and refresh to see if the problem disappears. Depending on the speed of your site and the number of plugins installed, this can be a cumbersome experience.
— <a href="https://wptavern.com/plugin-toggle-turns-wordpress-admin-bar-into-shortcut-to-enabledisable-plugins" rel="nofollow ugc">Jeff Chandler, WP Tavern</a>
</blockquote>
<h3>Additional Resources</h3>
<ul>
<li><a href="https://wordpress.org/support/view/plugin-reviews/plugin-toggle#postform" rel="ugc">Write a review</a></li>
<li><a href="https://github.com/cedaro/plugin-toggle" rel="nofollow ugc">Contribute on GitHub</a></li>
<li><a href="https://twitter.com/cedaroco" rel="nofollow ugc">Follow @cedaroco</a></li>
<li><a href="https://www.cedaro.com/?utm_source=wordpress.org&utm_medium=link&utm_content=plugin-toggle-readme&utm_campaign=plugins" rel="nofollow ugc">Visit Cedaro</a></li>
</ul>

Plugin Toggle

Simply yet effective. Very useful plugin. Thanks for developing this plugin is excellent.

One of the most needed plugin for the theme developers


I found this looking for a way to toggle Query Monitor to only use when debugging speed issues, since Query Monitor is a best of a plugin, an you don't want it running all the time, since it does cause significant Admin slowdown while using.



Same of many other Admin or infrequent use plugins. You want them installed, ready for occasional use, but not in day to day operations. 



Other's useful to know and toggle: Code Profiler, Black Bar, Anti-Malware Security and Brute-Force Firewall, Wider Admin Menu (sometimes overlaps some plugins not recognising this tweak), User Switching, Index WP MySWL for Speed, and many other occasional use plugins.



Thank you for your service. Another great example of how Wordpress's vast community hive-mind experiences and solves. 👍



PS: Be even more amazing if you could make it work with the other very helpful "Plugin Groups".


Genius! Essential for rapid development & testing plugins

Quickly toggle plugin activation status from the toolbar.

Toggle Toolbar vs Plugin Toggle