Today I learned about an easy way to share files between Mac apps

Apple has made macOS very good at handling drag and drops. For example, I often pull a picture right out of the Photos app or Safari and drop it into iMessage or Slack. One thing that’s always slowed me down, though, is moving around more traditional files, like PDFs or other documents.

But then I learned that quite a few apps, including many of the built-in ones, have a quick shortcut to get at the file you’re viewing. Using this shortcut (which is officially called the proxy icon), you can easily do things like upload a PDF you have open in Preview to Google Drive without having to go looking for the file in Finder. Here’s how it works:

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