Nick here from Shopify.
I did some investigating on this for you. Because the product images are on your computer and you are not importing them from another store or sales channel, the best way to do this would be via a CSV file. You would need to get the image links to the CSV file to do this and they must be publicly accessible also. The most common method is to upload the images to the "Files" section of your store to be able to get links for the images which you would then paste into the CSV file. Shopify has a very helpful guide on how CSV files work which you can find here.
I checked if this could be accomplished via an app from the Shopify app store, but because you are importing from your computer directly, the CSV route is your best bet.
Don't hesitate to ask should you have any other questions about anything.
All the best, Nick
Hey NIck hope evertything is fine with you!
I am setting a new operatino for my company inside shoify and I am running some tests.
This thread was extremely helpful, and If you don't mind I have another question.
Is it possible to export all of the images links? or I have to select one by one into the CSV file?