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OCR PDF

Scanned documents and smartphone photos of physical paperwork are often locked in image formats where text cannot be searched or copied. Pdfyara's OCR (Optical Character Recognition) engine processes scanned pages directly on your device, identifying character shapes and converting them into real digital text.

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Drop scanned PDF or image for OCR

Extract searchable, editable text directly in your browser

Single file • Max 100MB • Client-side processing
Step-by-Step Guide

How to Use OCR PDF

1

Upload Scanned Document

Select your scanned PDF or photo.

2

Select Language

Choose the document language (English, etc.) for high recognition accuracy.

3

Run OCR

Watch live character recognition progress as each page is parsed.

4

Copy or Download Text

Copy the extracted text or download it as a text file.

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Technical Architecture

How OCR PDF Works Under the Hood

Pdfyara runs a neural network OCR pipeline (Tesseract WebAssembly) directly in a dedicated browser Web Worker, inspecting contrast gradients, glyph features, and dictionary lookups.

Applications

Common Use Cases for OCR PDF

Digitizing Paper Invoices

Turn stacks of physical paper receipts into digital text records.

Archived Historical Records

Convert scanned library archives into searchable text databases.

Contract Extraction

Copy text clauses from faxed or photocopied agreements.

Best Practices

Recommended Approaches

  • Ensure scans have good contrast and are straight for the highest OCR accuracy (use Deskew PDF if crooked).
  • High scan resolutions (300 DPI) yield far superior recognition than blurry low-light photos.
Mistakes to Avoid

Common Pitfalls

  • Attempting OCR on severely blurry, dark, or distorted photographs.
Technical Limitations & Standards

What to Keep in Mind

  • •OCR accuracy depends directly on image clarity, handwriting legibility, and font styling; 100% accuracy cannot be guaranteed on low-grade scans.
Privacy Guarantee

100% Client-Side Processing

This tool runs completely inside your web browser using WebAssembly. Your documents are never uploaded, stored, or viewed by anyone.

Privacy Policy →

OCR PDF FAQ

Pdfyara supports English and major global scripts, with neural dictionary models running directly on your machine.

Related Tools & Resources

PDF to Text
Extract all selectable text and word counts
PDF Word Counter
Count words, characters, pages & reading time
PDF Analyzer
Inspect PDF architecture, fonts, images & structure

Step-by-Step Tutorials

How OCR Works: Making Scanned PDFs Searchable
An in-depth explanation of Optical Character Recognition technology and how to extract text from scanned paperwork.
How to Make a Scanned PDF Searchable
Turn locked image scans into searchable, indexable documents you can search with Ctrl+F.
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