A stock photo is a pre-existing photograph available for licensing and use by individuals, businesses, and organizations for various purposes. Professional photographers or agencies usually take these photos and often categorize them by subject matter, themes, and concepts. Stock photos are commonly used in advertising, marketing materials, websites, blogs, presentations, and other creative projects where high-quality images are needed. When someone purchases a license for a stock photo, they are granted the right to use the image according to the terms specified by the licensing agreement. The terms of use can vary and may include factors such as the duration of use, the number of copies or impressions, and whether the image can be used exclusively or non-exclusively. Stock photo websites provide a platform for photographers to showcase and sell their images to potential users. Users can search for and purchase the images they need from these websites, usually at a cost based on factors like image resolution and usage rights.