OCR for PDF: Make Scanned Documents Searchable and Editable
Run optical character recognition on scanned PDFs to add a searchable text layer. Extract text from images and scans.
Scanned PDFs are images—no text to select, search, or copy. OCR (Optical Character Recognition) analyzes the visual content and adds an invisible text layer behind the image, making the document searchable.
This is essential for compliance archives, legal document management, and anyone who needs to find specific text across hundreds of scanned pages.
When to use OCR
Any scanned document benefits from OCR: contracts, receipts, tax forms, medical records, research papers, and historical documents. Without OCR, you are searching through thumbnails manually.
OCR also enables text extraction (PDF to Text) and format conversion (PDF to Word) on scanned documents. Without the text layer, these tools return empty output on scans.
Accuracy expectations
Modern OCR achieves 95-99% accuracy on clean scans with standard fonts. Handwritten text, unusual fonts, degraded copies, and multi-language documents reduce accuracy. Always proofread critical content after OCR processing.
For legal or compliance use, treat OCR output as a finding aid, not a certified transcription. The original scan remains the authoritative document.