CR3 is what every Canon body since 2018 writes, from the M50 to the R5 Mark II. Older tools cannot read it. This one can. Drop the files, look at every frame, convert one or three hundred, all inside your browser.
This toolCR2CR3CRWNEFNRWARWSR2SRFRAFORFRW2RWLDNGPEFDNG3FRFFFIIQSRWX3FMEFMOSERFKDCDCRMRWDNG