QFX file or QFX format is OFX based format supported by Quicken. OFX specification allows the additional tag to be added, so it makes OFX parsers to be ready for unknown tags and therefore able to parse QFX files as well.
QFX files are also known as Web Connect files.
You can QFX files from other formats using the following tools:
to convert from OFX to QFX use OFX2QFX
to convert from CSV to QFX use CSV2QFX
to convert from XLS to QFX use CSV2QFX - open the file in Excel, select all CTRL+A, copy to clipboard CTRL+C and click “paste from clipboard” in CSV2QFX
to convert from QIF to QFX, use QIF2QFX or Bank2QFX
to convert from more formats and converts to more formats, use the ProperConvert app.