Which is better CSV or XLS?

Should I use CSV or XLSX?

In a xlsx you can save the formulas, graphs, pivots, etc in the file. A CSV is just a flat text file that uses a delimiter to separated the fields, e.g. Although Excel can read the fileformat and you can use formulas in it, you cannot save the formulas in the sheet. Excel will only save the result of the calculation.

Which is faster CSV or Excel?

Comparing CSV vs Xlsx, CSV files are faster and also consumes less memory whereas Excel consumes more memory while importing data. Comparing CSV vs Excel, CSV files can be opened with any text editor in windows while Excel files can't be opened with text editors.

Is CSV file smaller than XLS?

A CSV file will often be larger than the XLSX it was created from. This is because in XLSX is a actually a compressed (zipped) file - you can unzip it with a standard compression tool and check it out for yourself. You will see smaller XLSX files if there is a lot of repeat data.

What is an advantage to the .CSV format over XLSX?

A CSV file must save the data in plain text format; image-related (JPEG, PNG, JPG, etc.) data is impossible to keep. While Excel is a binary format, all the image-related data is easily saved in Excel format. CSV is a plain text file.