Today most photos are in digital formats, such as those you take with a smartphone, so they can be worked on with GIMP right away. But about old prints, slides, and negatives? Before you can work on them, they need to be digitized in some way. In this tutorial I look at some of the options you have for doing this
Links:
https://www.toptenreviews.com/best-photo-scanning-services
https://scandigital.com/
https://everpresent.com/
https://www.scancafe.com/
https://www.gophoto.com/
https://www.digitalmemoriesonline.net/
https://www.scanmyphotos.com/
https://www.pcmag.com/reviews/google-photoscan
https://www.toptenreviews.com/best-slide-to-digital-image-converters
https://www.ahuka.com/gimp/digitizing-photos/