Make scanned or image-based PDFs searchable by extracting text using optical character recognition.
Works best on scanned documents and image PDFs
Scanned PDFs and image-based documents contain text that you cannot search, copy or edit. OCR (Optical Character Recognition) reads the text in images and converts it to actual selectable text. QuackPDFTools uses Tesseract OCR — the industry-standard open-source OCR engine — to process your documents directly in the browser.
Accuracy depends on scan quality. Clean, high-resolution scans (300 DPI+) typically achieve 95%+ accuracy. Blurry or skewed scans produce lower accuracy.
15+ languages including English, Arabic, Urdu, Hindi, Chinese, French, German, Spanish, Japanese, Korean, Russian, Turkish and more.
OCR is computationally intensive. A 5-page document typically takes 30-60 seconds. Multi-page documents may take a few minutes — keep the tab open.
OCR works best on image-only PDFs. If your PDF already has selectable text, use the PDF to Text tool instead — it is much faster.
Make scanned or image-based PDFs searchable using Optical Character Recognition. Extract text from any scanned document in 15+ languages — fully browser-based.
Select your scanned or image-based PDF file.
Choose the language of the text in your document for better accuracy.
Click "Run OCR" to extract text. Download as .txt or copy to clipboard.
High-resolution scans with clear printed text give best results. Good contrast and minimal page skew help accuracy.
Yes — 15+ languages including Arabic, Chinese, French, German, Hindi, Japanese, Spanish, Urdu, and more.
OCR is CPU-intensive and runs entirely on your device. Multi-page documents can take 1-3 minutes — do not close the tab.
Clean high-contrast scans of printed text typically achieve 95%+ accuracy. Handwritten text is harder to recognize.