An extension—also called a plug-in or an add-on—is a small program you download to add features to your browser. You can add the Dashlane extension to Firefox, Safari, Microsoft Edge, Google Chrome, and other Chromium browsers like Opera or Brave.
You don't need an extension on your phone or tablet because everything you need is contained in the Dashlane app.
The Dashlane extension gives you quick access to your data and lets you autofill logins and other information saved in Dashlane. You can also use the web app in your browser with or without the Dashlane extension, but we recommend downloading the extension to get the full benefits of Dashlane.