I am unable to open qmc due to server issue so I need backup of all the application but applications are in binary format so is it possible to convert them into .qvf format.
check this as well:
Is binary load supported in Qlik Sense ?
Correct Syntax for Binary load in Qlik Sense
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Binary Load in Qlik Sense Platform - YouTube
which version of Qlik Sense Server are you using?
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