Print Preview per Jhonatas Machado

Note: This Add-on is completely free! Please consider make a small donation (and write me a message) or write an review. Thank you!

By clicking on the extension icon or using the shortcut keys you can have a preview of the page you are accessing before printing, thus providing a paper economy in addition to avoiding repeated impressions, which certainly benefit the nature.

The Add-on currently has the following features:
1. Click on the button in toolbar to Print Preview
2. Enable or disable the context menu to Print Preview
3. Use shortcuts to open the Print Preview
4. You can edit the shortcuts in about:addons > Manage Extension Shortcuts (Firefox 66 or later)

Shortcuts (Default)
Mac shortcut keys: Command + Shift + U
Windows shortcut keys: Ctrl + Shift + U
Linux shortcut keys: Ctrl + Shift + U

Change shortcuts
In your address bar type about:addons
Click the gear above the installed Add-ons
Click in Manage Extension Shortcuts

If you find any bugs, have any suggestions or some ideas for this add-on: Please create a new issue.