Hi @madhikar
You can do this rather easily with Airtable. Airtable natively supports the loading of images from a file on your computer or via URL. You can either manage your images via a separate table (useful for specifying alt tags and the order of your images) or using our Power Images functionality that embeds images right into your product/variant tables. Read more about how to manage your Shopify Images with Airtable and also how to bulk update your Shopify data in general.