OCR PDF

OCR PDF

Turn scanned PDFs into documents with selectable, searchable text.

🔒 100% private ⚡ No file uploads 🆓 Free, no limits

How to run OCR on a scanned PDF online

1

Upload the scanned PDF

Drag the file or click to select it from your computer. It works with scanned or photographed documents that don't have selectable text.

2

Choose the document's language

Select the language the PDF is written in so text recognition is more accurate.

3

Run the OCR and download

The tool adds an invisible text layer over each page, aligned with what's written. You can then search and select text in the resulting PDF just like in any digital document.

Why perform OCR on your PDFs at PDFDocks?

Optical character recognition (OCR) typically consumes quite a few resources, which is why almost all online tools process it on their own server: you upload the scan, wait, and download the result. At PDFDocks, OCR runs with Tesseract.js directly in your browser, using the power of your own computer or mobile device. This comes with an honest trade-off we prefer to tell you about: since we don't use a powerful dedicated server, the process may take a bit longer for lengthy documents than tools that do process in the cloud. In return, your scanned document—which may contain any type of information—never leaves your device. The tool adds an invisible text layer aligned with what's written, so the resulting PDF comes with searchable and selectable text without altering the original visual appearance.

Will OCR make my PDF searchable?

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Yes. Your file is never uploaded to a server: text recognition runs directly in your browser, so the PDF never leaves your computer at any time.

Why does it take longer than other online OCR tools?

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Because text recognition runs with the power of your own device instead of on a dedicated server. In return, your document never leaves your computer.

Is my scanned PDF uploaded to a server?

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No. All text recognition occurs in your own browser through Tesseract.js, without the file traveling over the internet.

Can I choose the document language to improve accuracy?

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Yes. Selecting the correct language before running OCR significantly improves text recognition accuracy.

Does the visual appearance of the PDF change after OCR?

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No. An invisible text layer is added aligned with the written content; visually the document looks exactly the same as before.

Does it work with any language or font?

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It works best with clear printed text in the most common languages. With handwriting or low-quality scans, accuracy may be reduced.

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