Quick Look

Quick Look enables apps like Finder and Mail to display thumbnail images and full-size previews of Keynote, Numbers, Pages, and PDF documents, as well as images and other types of files. These previews can be tremendously helpful when a user is trying to locate a specific document.

Implement a Quick Look viewer in your app if it makes sense. If your app lets people attach or otherwise interact with files—especially files your app doesn’t natively support—consider implementing a Quick Look viewer so people can preview those files without leaving your app.

Consider implementing a Quick Look generator if your app produces custom file types. A Quick Look generator enables other apps, including Finder and Spotlight, to display previews of your documents, making it easier for people to find your content.

For developer guidance, see Quick Look Programming Guide and Quick Look.