The closest thing I'm aware of is this: https://github.com/arcturus/node-csv2api https://github.com/arcturus/node-csv2api Edit: I should add that Sheetlabs use

The closest thing I'm aware of is this: https://github.com/arcturus/node-csv2api https://github.com/arcturus/node-csv2api Edit: I should add that Sheetlabs uses loads of open source goodies under the hood. For converting inputs we use libreoffice for XLS to CSV and xslx2csv for XLSX files to CSV files.