Advanced OCR PDF Tool

What is OCR?

OCR stands for Optical Character Recognition. When you scan a physical document, the result is a PDF made of images — the text in it is not actually text, it is just pixels that look like text. You cannot select it, copy it, or search it. OCR reads through those images and recognises the letters, turning them into real, selectable text. After OCR, your PDF becomes fully searchable and you can copy text out of it.

When Do You Need OCR?

• Scanned Documents: Any document scanned on a photocopier or scanner will be an image PDF. OCR makes it usable.
• Old Files: Legacy documents stored as image PDFs need OCR before the content can be extracted or edited.
• Receipt Scanning: OCR lets you extract amounts, dates, and vendor names from scanned receipts for accounting.
• Research Papers: Older academic papers stored as image scans can be converted to searchable text with OCR.
• ID Documents: Extract text from scanned IDs, passports, or licences for form filling.

How to Run OCR on Your PDF

1. Click "Choose PDF File" and upload your scanned PDF.
2. Click "Apply OCR to PDF" — the tool processes each page using Tesseract OCR. This takes a little time depending on the document size.
3. Once done, click "Download OCR'd PDF" to save the searchable version.

What to Expect

Q: How accurate is the OCR?
A: Accuracy depends on the quality of your scan. Clear, high-resolution scans give much better results than blurry or low-contrast images.

Q: Does it work on handwritten text?
A: Tesseract is primarily trained on printed text. Handwriting recognition is limited and may not be reliable.

Q: Are my documents uploaded to a server?
A: No. Tesseract.js runs directly in your browser. Your PDF never leaves your device.