For blogs and online projects, Unsplash can come in handy. It has features which let you hunt the inventory online and also you can subscribe to 10 quality images which you will be receiving within 10 days. Unsplash accepts and publishes images under the license of the Creative Common Zero (CZO), this implies that you can use the images for own use or even profitable use. You can copy, modify or distribute the quality images without having to pay for them.
For an impressive work, Picjumbo does wonders by cataloging the content which you will find very easy to hunt for the perfect image you are looking for. They offer imagery that is very realistic and ones that are not too staged. To have an idea, it is almost as good as Shopify.