An HTML report is an HTML file that you can quickly open in an Internet browser and print if you need a hard copy of the report. In an HTML report, the data is grouped into different sections. The report contains calculations and breakdowns that are not available in a CSV type.
The HTML report is a good choice if you want to see a summary of some data, such as total sales for a given period.
A CSV-type report is a CSV file. You can open and edit it in spreadsheet software such as MS Excel or Google Sheets. A CSV report contains a simple list of selected data, such as a list of products sold or orders.