You can edit your data online like Excel through Table Editor, and the changes will be converted into Firebase List in real-time.
Finally, the Table Generator shows the result of the conversion. You can then use the push method in the Firebase APIs to add to the list of data in the Firebase database.
Note: Your data is secure, the converts is done completely in your web browser and we will not store any of your data.
Firebase is a BaaS app development platform that provides hosted backend services such as a realtime database, cloud storage, authentication, crash reporting etc.