This is the command dccleancrw that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
dccleancrw - Canon (CRW) RAW photo file recovery utility
dccleancrw crw_0001.crw crw_0002.crw ...
Because they are parsed from the end, Canon CRW files become unreadable if garbage data is
appended to them, as often happens when files are recovered from damaged media. This
program truncates CRW files to the correct size.
Use dccleancrw online using onworks.net services