If your data and locale are US/UK based then programs like Microsoft Excel will export a correctly formatted CSV file. If your locale requires non-ASCII characters (eg. Cyrillic, Arabic, Greek, Hebrew, Thai, Chinese etc...) then most programs will export a file that contains non-ASCII characters.

To overcome this you need to do two things:

1. Convert the file to a UTF-8 format.
2. Encode the non-ASCII characters as HTML entities

These steps are covered in our FAQs on the subject:

1. What file format does EasyTable support?
2. Why do letters like é, å, ä, ö disappear?