The StockPack plugin provides a way to search images on Unsplash, Adobe Stock, Pixabay and Deposit Photos seamlessly. You can also license the images directly from the WordPress dashboard. You don’t need to set any API keys, just create an account and that is it.
The premium account allows you to make 500 searches per hour. You also get access to all new features right away if you want to opt into them.
This is the simplest way to get an image into your WordPress install, you download images directly to your server, caption are prefilled for the free providers, and it’s just optimum. No extra steps, no extra clicks, you just get images when you need them. You save a ton of time going back and forth between websites and you can keep being productive.