Which is lighter CSV or XLSX?

Is CSV lighter than Excel?

Because Alteryx-created Excel files don't have any specific formatting, and are often (as in your case) only one tab, they can be much smaller than something like a CSV which does not use any compression process to store data.

Is CSV or XLSX better?

Bottom Line. While Excel (XLS and XLSX) file formats are better for storing more complex data, CSV files are supported by nearly all data upload interfaces. If you are planning to move your data between platforms, export and import it from one interface to another, you might be better off with the CSV file format.

Which is faster CSV or XLSX?

KEY DIFFERENCE CSV file can't perform operations on data while Excel can perform operations on the data. Comparing CSV vs Xlsx, CSV files are faster and also consumes less memory whereas Excel consumes more memory while importing data.

What is the lightest Excel format?

As a general rule, if your file size is small (less than 5 MB), it's better to stick to XLSX/XLSM formats. Based on what I heard from people and read on many forums, a lot of people prefer to use XLSB as the file format when it comes to using Excel.