Absolutely! Mass File Download is fully compatible with files of any size. Even if a file is particularly large, the download may take a bit longer, but rest assured that Mass File Download is capable of completing the download successfully.
PS: View Mass File Download, Salesforce file download app on Salesforce AppExchange: https://appexchange.salesforce.com/appxListingDetail?listingId=a0N3A00000EcsAOUAZ