Unsplash is the name of the website and the search engine that allows you to search for and use high-resolution photos. Sadly, the website that hosts the search engine is a little confusing. The text on the website is trying to say that you may use the photos for whatever you wish, and that the photos are not owned by you. The Unsplash website and search engine allows you to search through a database of photos that you may use for free on your website, blog, app or computer. There are terms and conditions, but they mostly apply to people who wish to make money from the images or people who wish to change the photos in a negative way.