How to OCR a PDF on Mac Offline
To OCR a PDF on a Mac offline, open it in Preview and select text with Live Text, which recognizes text in images on-device. That lets you copy text but does not save a searchable layer. For a saved searchable PDF, run an OCR tool that writes the recognized text back into the file, locally.
Live Text in Preview
Open a scanned PDF in Preview and drag across the page. If Live Text works for your language, you can select, copy and look up the text. This runs on-device and needs no setup.
Making the PDF itself searchable
Live Text does not reliably save a searchable text layer into the file, so other apps and search tools may still see only pictures. An OCR step that adds an invisible text layer behind the scan fixes that, and the pages look the same.
OCR with Paperlane for Mac
Paperlane for Mac is a free native macOS app that makes scanned PDFs searchable on your Mac. Its Make PDF Searchable tool uses Apple's Vision text recognition on your Mac, keeps the page appearance and adds an invisible text layer. It handles one PDF or a whole folder of scans in one job.
Accuracy limits
Handwriting, skewed photos, small print and low-resolution scans produce errors. Always spot-check numbers and names. Supported languages depend on the macOS recognition models.
Frequently asked questions
Is OCR on a Mac private?
Yes when it uses on-device recognition such as Live Text or Vision. Nothing is uploaded.
Can I OCR a folder of PDFs?
Paperlane for Mac can run Make PDF Searchable on a folder of scans and add an invisible text layer to each PDF.