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How Search Works

How SearchOnMac Understands You

How a sentence like “the PDF I downloaded this morning” becomes a search — on your Mac, in milliseconds.

2 min read · Updated September 2026

What it listens for

People remember what something was, where it is, when they used it and what they want to do with it — rarely its exact name. SearchOnMac picks those out of what you type:

You rememberSearchOnMac understandsYou might type
What it wasThe kind of file“pdf”, “screenshot”, “spreadsheet”, “slides”
Where it isThe folder it’s in“Downloads”, “Desktop”, “Documents”
When you used itA time range“this morning”, “yesterday”, “last week”
What to doThe action“open”, “show in Finder”, “copy”

Fast, and on your Mac

Understanding what you typed takes about 5 ms on your Mac. Results come from SearchOnMac’s own index and usually appear in about a tenth of a second — the median was 90 ms across 83 real searches on our test Mac.

Tip: Searches never use the network, so they work the same offline or in Airplane Mode.

Try it on your Mac.

Press ⌥ Space and type what you remember.

Download for Mac