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🔤 OCR PDF — Extract Text

Extract text from scanned PDFs and images using optical character recognition. Supports multiple languages. Fully local processing.

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Click to upload a scanned PDF or image

Supports PDF, JPG, PNG — text will be extracted via OCR

📖 How OCR Works

Optical Character Recognition (OCR) converts images of text into machine-readable text. This tool uses Tesseract.js, the JavaScript port of the world's most accurate open-source OCR engine (Google's Tesseract).

When processing a scanned PDF, each page is rendered to an image using pdf.js, then analyzed by Tesseract.js to detect and recognize text characters. The engine supports multiple languages with pre-trained models that are downloaded on-demand.

All processing happens in your browser. The OCR language models are loaded from a CDN but your actual document content is never transmitted anywhere. This makes it safe for sensitive documents.

❓ Frequently Asked Questions

Accuracy depends on image quality, font type, and language. For clean, typed documents at 200+ DPI, expect 95-99% accuracy. Handwritten text, low resolution scans, and unusual fonts may have lower accuracy.

OCR is computationally intensive. The first run downloads the language model (~2-15 MB) and initializes the engine. Subsequent pages are faster. Typically expect 5-30 seconds per page depending on your device.

Currently this tool supports one language per OCR session. For documents with multiple languages, run OCR separately for each language section.

📖 What Is OCR?

OCR (Optical Character Recognition) extracts text from scanned documents, images, and photographed pages. Our tool converts image-based PDFs into searchable, selectable text — essential for digitizing paper documents, extracting data from receipts, and making scanned archives searchable.

Using the Tesseract.js engine running entirely in your browser via WebAssembly, your documents are never uploaded to any server. This is critical for confidential documents like financial statements, medical records, and legal filings.

🚀 How to Use This Tool

  1. Upload a scanned PDF or image file
  2. Select the document language for best accuracy
  3. Wait for OCR processing to complete
  4. Copy extracted text or download as searchable PDF

💡 Tips & Best Practices

Accuracy Tip: OCR works best on clean, high-contrast scans at 300 DPI or higher. Straighten tilted pages before OCR. Support for multiple languages — select the correct language for best results. Handwritten text recognition is limited.

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