In what format should I save scanned negatives?

[Dianna Cameron]

I have only enrolled for the bridge class. Got sick.  Won't be able to concentrate until New Year.  In the meantime would like to scan lots of old photos.  Can someone please tell me what the best format and resolution to use?  thank you

[Damien Symonds]

https://www.damiensymonds.net/scanning-guidelines-for-old-photo-restoration.html