What Is OCR and How to Make a Scanned PDF Searchable
Turn a scanned, image-only PDF into a searchable document you can select and copy text from.
Updated July 24, 2026
What OCR actually does
A scanned PDF is really a picture of a page — you can see the text, but you cannot select, search, or copy it. OCR (optical character recognition) reads that picture and adds a real text layer, turning the scan into a searchable, selectable document.
How to make a PDF searchable
Upload your scanned PDF to the OCR tool.
Let it read each page and rebuild a searchable PDF.
Download the result, then try selecting or searching the text.
What affects OCR quality
Clean, high-contrast scans read best. Blurry photos, faint print, handwriting, and skewed pages are harder and may need review. Straightening a crooked scan before OCR improves accuracy.
When you need this
OCR is essential for making old scans searchable, extracting text from receipts and forms, and preparing documents so they can be indexed or read by assistive tools.