Essential Buttons Toolbar by Kristhian X.

This extension inserts a toolbar on all permitted web pages that automatically hides when scrolling.

Available buttons are:

• Homepage: Opens the default homepage URL. Can be changed in options.
• Duplicate Tab: Opens current URL in new tab.Long-press it to access the browser's default link options, such as opening in the background, copying the link, etc.
• Close tab: Closes the current tab. If the current tab is the only open tab, it opens the homepage URL instead.
• Close other tabs: Due to the current behavior of the tabs API on Android Firefox, it cannot close unloaded tabs. Closed tabs can be restored with the undo close tab(s) button.
• Close all tabs: Due to the current behavior of the tabs API on Android Firefox, it cannot close unloaded tabs. As the close tab button, it opens your homepage URL when the last tab is closed. Closed tabs can be restored with the undo close tab(s) button.
• Undo Close Tab(s): Opens in a new tab the most recently closed tab(s) by this add-on. Please note that, at the moment, it does not keep track of tabs closed by the browser or other add-ons.
• New tab: Opens the default new tab page URL. Can be changed in options.
• Go back: Navigate back in history.
• Go forward: Navigate forward in history.
• Reload: Reloads the current page.
• Scroll to the top.
• Scroll to the bottom.
• Toggle Desktop Site: Modifies the user agent string to the one used in the desktop version of Firefox across all tabs, persisting through browser restarts.
• Move toolbar: Moves the toolbar to the top of the page or to the bottom if it is at the top.
• Hide toolbar: Hides the toolbar. Refresh the page to display it again.
  Menu: Opens an additional bar. This feature is provided to improve organization. Buttons in the menu can be customized on the settings page.
• Settings: Opens the settings page for this add-on in a new tab.

Other options include:

• Toolbar height: The number of pixels. The default value is set to 42px.
• Toolbar transparency: Adjust it to your liking.
• Toolbar default position: Top or bottom.
• Icon theme: Feather Icons and Heroicons available.
• Hide on scroll method: Option to change the used method or to disable it.
• Toolbar buttons: Enable/disable the buttons and change their position.
• Exclude URLs: Specify which web addresses to exclude.
• Live reload of settings changes: No more need to refresh the pages to apply the new settings or the exclude rules.
• Integrated blank.html: A blank page where the toolbar is accessible.

More info:

This extension is open-source. This extension does not access, log, or share your data. It is also ad-free and will always remain so. You can check the GitHub page for more information and usage tips:
https://github.com/KristhianX/essential-buttons-toolbar

The icons used in this extension are from the elegant Feather Icons collection:
https://github.com/feathericons/feather
The beautiful Heroicons theme is also available:
https://github.com/tailwindlabs/heroicons

Support me:

Love this add-on? Help me keep it awesome! Consider donating to support future updates:
https://www.buymeacoffee.com/kristhianx
Thanks for your support! 🚀

Permissions:

Access browser tabs: Allows the extension to check the number of open tabs, allowing the close button to open the home page if only one tab is open.
Access your data for all websites: Allows the extension to insert the toolbar on permitted websites.