.QBO File Extension

File used by QuickBooks, a program used for small business and personal finances; contains an electronic statement downloaded from an online account; used to import and synchronize online bank statements on a local computer.

QBO files may be opened manually in QuickBooks by navigating to File → Import → From Web Connect....

NOTE: If you need to convert bank and credit card statement .PDF files to the QBO format you can use the PDF2QBO application developed by ProperSoft, which is available for Windows and OS X users.