PDF OCR - Optical Character Recognition
Extract text from scanned PDFs and images using advanced OCR technology
Upload PDF
OCR Settings
Enter "all" or specific pages (e.g., "1,3,5")
OCR Results
Upload a PDF file to extract text using OCR
Works best with scanned documents and images
Related Tools
Sign PDF
Add digital signatures to your PDF documents with certificate generation
PDF Info
Extract metadata and information from PDF files including page count, author, and creation date
Extract Text
Extract text content from PDF files for analysis and processing
Merge PDFs
Combine multiple PDF files into a single document
Split PDF
Extract specific page ranges from PDF files
Encrypt PDF
Add password protection to secure your PDF files
About PDF OCR
Extract text from scanned PDFs and images using advanced Optical Character Recognition (OCR) technology. Our OCR tool can recognize text in multiple languages and provides high-accuracy text extraction.
Key Features
- Multi-Language Support: Recognize text in 13+ languages including English, Spanish, French, German, Chinese, Japanese, and more
- Smart Processing: Automatically detects if PDF has text and uses fast extraction, or performs OCR for scanned documents
- Image Enhancement: Optional image preprocessing for better OCR accuracy
- Selective Processing: Process all pages or specific pages only
- Confidence Scores: View per-page confidence scores to assess OCR quality
- Multiple Export Formats: Download as plain text or JSON with detailed metadata
How to Use
- Upload PDF: Click to upload your scanned PDF or image-based PDF
- Configure Settings:
- Select the language of the document
- Choose which pages to process (all or specific pages)
- Enable image enhancement for better accuracy
- Process: The tool automatically processes your PDF
- Review Results: View extracted text, confidence scores, and per-page statistics
- Export: Download as plain text or JSON format
Supported Languages
- European: English, Spanish, French, German, Italian, Portuguese, Russian
- Asian: Chinese (Simplified & Traditional), Japanese, Korean
- Middle Eastern: Arabic
- South Asian: Hindi
OCR Methods
The tool uses two methods depending on your PDF:
- Text Extraction: If your PDF already contains text (not scanned), it uses fast text extraction
- OCR Processing: For scanned documents or image-based PDFs, it converts pages to images and performs OCR
Tips for Best Results
- Image Quality: Higher resolution scans produce better OCR results
- Enhancement: Enable image enhancement for low-quality scans
- Language Selection: Choose the correct language for best accuracy
- Selective Processing: Process specific pages to save time on large documents
- Confidence Scores: Pages with confidence below 70% may need manual review
Common Use Cases
- Document Digitization: Convert scanned paper documents to searchable text
- Data Extraction: Extract data from scanned forms and receipts
- Archive Conversion: Make old document archives searchable
- Accessibility: Convert image-based PDFs to text for screen readers
- Content Analysis: Analyze text content from scanned documents
Technical Details
- OCR Engine: Powered by Tesseract OCR
- Image Processing: Uses pdf-poppler for PDF to image conversion
- Enhancement: Optional image preprocessing with Sharp
- Output Format: Plain text or structured JSON with metadata
Privacy & Security
Your PDF files are processed securely on our servers. Files are automatically deleted after processing and are never stored permanently. All processing happens in a secure, isolated environment.