ALL PDF TOOL

OCR PDF Text Recognition

Extract text from scanned PDF documents and images online for free using OCR.

How to use OCR PDF Text Recognition

  1. Upload a scanned or image-based PDF document.
  2. Select the document language for optical character recognition (e.g. English).
  3. Click "Execute OCR PDF" to begin character recognition.
  4. Copy the extracted text or download the resulting text file.

Technical Details & Specifications

The OCR engine loads Tesseract.js WebAssembly worker threads inside the browser, rasterizing PDF pages into canvas bitmap buffers and running neural network text recognition client-side.

Frequently Asked Questions

Does AllPDFTool's OCR PDF tool process files on a server?

AllPDFTool's OCR engine operates using Tesseract.js compiled to WebAssembly, running character recognition entirely within your device browser without remote server processing.

What types of documents work best with OCR PDF?

Scanned paper receipts, book pages, historical documents, photographed invoices, and flattened PDF scans work best with AllPDFTool's OCR tool.

Can I copy text extracted from a scanned PDF?

AllPDFTool provides a copy button and a text output window allowing immediate copy-pasting of OCR-recognized text to your clipboard.

Is OCR text recognition free on AllPDFTool?

AllPDFTool's OCR PDF tool is 100% free with unlimited usage and no mandatory user accounts.

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