I tried to use the batch conversion, but there is no batch conversion under "tools". I can only export files, that's all and only one file at a time and not all together.
I'm using:
XnView QT
Version 0.12 (Nov 19 2008) Libformat version 5.06
no batch conversion
Moderators: helmut, XnTriq, xnview
You are using XnView MP which is under development and which hasn't got the Batch functionality, yet. You have to use XnView Windows or XnView for Un*x. (Not 100% sure that XnView Un*x does support it).