Pasteboards can hold multiple items, each of which can have one or more representations which are known here as flavors and conform to UTI types such as public.jpeg for a JPEG image. If you want to browse the full sequence of entries for the summaries I provide here, I have put them into an appendix. The details are a bit more complex, and can be followed in the log by watching entries from the sub-system. When you paste an item from the clipboard, its data are passed to the requesting app, which then performs any conversion necessary, and inserts it in the document. When you cut or copy an item, its data are converted into one or more standard formats and passed to one of the pasteboards managed by pboard, normally the general pasteboard to make it accessible to everything else. It’s all run by a tiny background service or daemon /usr/libexec/pboard, with which each app communicates using XPC messages. This article explains how it works, and how you can see inside it.Īs one of the oldest features of the Mac, going back to its precursor the Lisa, the pasteboard is one of the most mature parts of macOS. ![]() For the macOS user, this is handled through the Clipboard, but internally (and to developers) it’s confusingly known as the Pasteboard instead. ![]() ![]() The ability to cut, copy and paste items within and between documents is one of the most fundamental features of modern computer systems.
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