PDF HUB 24

OCR PDF Online Free — Make Scanned PDF Searchable

Make scanned PDF searchable with free OCR online. Extract and recognize text from scanned documents. No signup, supports multiple languages.

Scanned PDFs are image files — they look like documents but contain no actual text data. OCR (Optical Character Recognition) reads the image and adds a text layer, making the PDF searchable, copyable, and convertible to Word or Excel. Our free OCR tool transforms any scanned PDF into a fully functional text document. After OCR processing, you can search the document with Ctrl+F, copy text by selecting it, and convert to Word using our PDF to Word tool. The OCR text layer is invisible — the scanned image remains exactly as it appeared before, but now it has searchable text underneath. OCR accuracy depends on scan quality. Documents scanned at 300 DPI or higher with good contrast and straight orientation achieve 98-99% character accuracy. Poor quality scans (blurry, rotated, low contrast) may have lower accuracy. If your scanned document is slightly rotated, use our Rotate PDF tool before OCR for better accuracy. For non-English documents, OCR still works for Latin-script languages (Spanish, French, Portuguese, German, Italian). Arabic, Hindi, Chinese, and other non-Latin scripts may require specialized OCR tools for best results.

Common Use Cases

  • Making scanned contracts searchable for keyword review
  • Converting scanned bank statements to editable format
  • Making scanned academic papers searchable
  • Converting paper records to searchable digital archives
  • Making scanned legal documents copyable

Frequently Asked Questions

What scan quality does OCR work best with?

300 DPI or higher, with straight horizontal text and good contrast between text and background. Black text on white background at 300 DPI achieves near-perfect accuracy.

Does OCR change how the PDF looks?

No. The scanned page image is unchanged. OCR adds an invisible text layer beneath the image, making text discoverable without altering the visual appearance.

Can I copy text from the PDF after OCR?

Yes. After OCR processing, click and drag to select text in any PDF viewer. The recognized text is selectable and copyable.

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