Automatically convert CSV files to nicely formatted Excel spreadsheets, using an example Excel spreadsheet to control the formatting. No one likes to open CSV files in Excel. Create Excel workbooks for your users to download. GoodGrids is a simple CSV to Excel spreadsheet conversion API. You create a formatted Excel file to serve as an example. Upload your CSV file manually, via the API, or use Zapier and get an Excel file back that looks like your example with the data from your CSV.