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.

jamesckemp

Admin Bar toggle adds a toggle switch to show/hide the admin bar on the front-end. This is much less intrusive, but still allows you to use all the useful features of the admin bar.
<ul>
<li>Hides the admin bar on the front-end by default. This is much less intrusive.</li>
<li>Adds a small toggle button in the top right to activate the admin bar.</li>
<li>Toggle remains in place to hide it again.</li>
</ul>
This plugin assumes that the admin bar is active, and hasn’t been disabled in your user profile

Admin Bar Toggle

If your theme has a top menu bar, this plugin is very useful to stop the wordpress Admin bar interfering with your review of the design but keep it handy to use when needed

very useful and still works

Thanks for the plugin! Keep up the good work!

Thumbs up

Hides the admin bar on the front-end by default, and adds a toggle to activate it.

Toggle Toolbar vs Admin Bar Toggle