What is PDFKit on macOS?

/System/Library/Frameworks/PDFKit.framework/Versions/A/PDFKit

There is no exact information for this binary file. Please, contribute some or search for another.

/System/Library/Frameworks/QuickLookUI.framework/Versions/A/PlugIns/PDFKit.qldisplay/Contents/MacOS/PDFKit

There is no exact information for this binary file. Please, contribute some or search for another.

The binary is a part of QuickLookUI public framework.