What is QuickTime Player primarily used for?

QuickTime Player is primarily used as a multimedia player that allows users to play back a variety of media formats, including video, audio, and interactive content. Its versatility in supporting multiple codecs and file types makes it an essential tool for viewing and listening to different media without needing additional software. QuickTime Player includes features for editing and converting media files as well, enhancing its functionality beyond just playback.

The other options address tools and functions that do not accurately describe QuickTime Player. It is not a text editing tool for coding, which relates to programming or script writing. It also does not serve as photo editing software, which is specifically designed for manipulating images. Lastly, it is not a web browser for streaming content; while it can play streamed media, its primary design is not for web browsing but rather for handling media files on a computer.