Hi Ahmed Darweesh,
We can get the Spreadsheet data in JSON format by using the saveAsJson
method. In the below Knowledge Base, we have passed the Spreadsheet JSON data
to server side i.e., SQL Database in controller, from that Database you can save
and retrieve Spreadsheet data as JSON.
https://www.syncfusion.com/kb/11956/how-to-save-and-retrieve-the-spreadsheet-data-as-json-in-database
Likewise, by using the saveAsJson object, you can save the
Spreadsheet JSON data in your Firebase database.
Please get back to us, if you need further assistance.
Regards,
Gayathri K