Optimise PDF
OCR PDF
Turn scanned PDFs into searchable, selectable text using OCR with 50+ languages.
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PDF · Max 25 MB
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How to use OCR PDF
- Step 1
Click "Choose file" or drag and drop your scanned PDF onto the upload area.
- Step 2
Select the OCR language from the dropdown menu.
- Step 3
Click "Run OCR" to process the document.
- Step 4
Wait for the OCR engine to extract text from each page.
- Step 5
Download the searchable PDF with an invisible text layer.
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How OCR PDF Works
OCR (Optical Character Recognition) scans your PDF page by page, identifies text regions within images, and converts them into machine-readable, selectable, and searchable text. The processed PDF looks identical to the original, but you can now highlight, copy, and search the text — making scanned documents fully usable in digital workflows.
Language Support
BrainyPDF OCR supports 50+ languages including English, Spanish, French, German, Chinese (Simplified & Traditional), Japanese, Korean, Arabic, Hindi, Russian, Portuguese, Italian, Dutch, Turkish, Polish, and many more. The tool automatically detects the document language, or you can select it manually for better accuracy with mixed-language documents.
Scanned PDFs vs Digital PDFs
Digital PDFs created from word processors already contain selectable text and do not need OCR. Scanned PDFs — documents created by photographing or scanning physical pages — store pages as images, making text non-selectable by default. OCR bridges this gap by extracting the text from those images.
Tips for Best OCR Accuracy
- Use high-resolution scans (300 DPI or higher) for the best text recognition results
- Ensure the document is properly aligned — skewed or rotated pages reduce accuracy
- Select the correct language for your document to improve character recognition
- Clean, crisp scans of printed text yield near-perfect results; handwritten text is less reliable
Frequently asked questions
Does OCR support multiple languages?›
Yes, OCR supports 50+ languages.
Will the file stay private?›
Files are processed temporarily and deleted immediately after download.
Is OCR PDF free to use?›
Yes. The tool is available in the free tier with monthly operation limits and no account required. Premium users get higher file-size limits and unlimited operations.
Do I need an account to use this tool?›
No account is required. Upload your file, process it, and download the result — all without signing up.
Is my data safe? Are files uploaded to your servers?›
Most PDF operations are handled directly in-browser via WebAssembly. If server-side processing is required, files are stored in encrypted temporary storage and deleted immediately after download — within 15 minutes maximum. No files are retained.
How accurate is the OCR text recognition?›
OCR accuracy depends on the quality of the scanned document. Clear, high-resolution scans yield near-perfect results. Handwritten text, low-resolution scans, or heavily stylized fonts may have lower accuracy.