The TinyURL for Sheets – URL Shortener add-on is specifically designed for use within Google Sheets. Access to this add-on is limited to the Google Sheets environment.
To initiate the add-on, please create a new Google Sheet by entering a sheet.new into your browser's address bar, or navigate to Google Drive to open an existing sheet. Once the sheet is open, locate the add-ons menu, select TinyURL for Sheets – URL Shortener from the list of available options, and then click on Open from the corresponding submenu.