Here are the steps to clear your local storage in the Firefox browser:
- Open a Firefox browser page.
- Use your keyboard F12 key to open the Firefox Developer Tools Console.
Firefox Developer Tools Console - Click Storage in the console's top menu.
Console – Storage - Expand the Local Storage list located in the console's left menu.
Console – Storage – Local Storage - Right-click your site(s) and click Delete All to delete the local storage.
Local Storage – Delete All