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.

aldibudimanputra

Lightweight Admin Toolbar Toggle allows Administrators to toggle the WordPress admin bar on/off from the frontend. The admin bar floats over content without pushing the page layout, providing a seamless experience.
<h3>Features</h3>
<ul>
<li>Toggle admin bar visibility with a floating button</li>
<li>Admin bar floats over content – no layout shift</li>
<li>Settings page to choose the toggle button position (8 positions around the screen edge)</li>
<li>Show or hide the toggle on specific pages with include/exclude URL rules and * wildcards</li>
<li>Optionally remember the toolbar open/closed state between pages (browser localStorage, no database writes)</li>
<li>Optionally hide the front-end toolbar completely for non-administrator users</li>
<li>Only visible to Administrators</li>
<li>Compatible with popular page builders (Elementor, Divi, Astra, etc.)</li>
<li>Stays out of the Elementor editor/preview and the Customizer preview</li>
<li>Shields the toolbar from theme CSS resets that break its layout and icons</li>
<li>Keyboard accessible toggle button (Enter/Space) with proper ARIA attributes</li>
<li>Glassmorphism styled toggle button</li>
<li>Translation ready</li>
<li>Cleans up its settings on uninstall</li>
</ul>

Lightweight Admin Toolbar Toggle

A plugin to toggle the WordPress admin bar and make it float without taking up page space. Only visible to Administrators.

Toggle Toolbar vs Lightweight Admin Toolbar Toggle