Duplicate file finder - external drive

Gers

I have two external hard drives which I use to backup / copy files to.

Now I realise that I have multiple copies of files and photographs which are taking up too much space on the drives.  Is there reliable programme which can identify these files - preferably free as this is MSE?

Thanks

B0bbyEwing

https://www.auslogics.com/en/software/duplicate-file-finder/#compare

HillStreetBlues

Never needed a fie one, for pics I use https://www.duplicate-finder.com/photo.html

returnofghandi

https://sharewareonsale.com/s/free-wise-duplicate-finder-pro-100-discount