Extract and Recognize Text from Scanned PDFs
Run OCR on scanned PDFs to make them searchable and copyable, entirely in your browser using Tesseract. No upload. 100% secure local processing.
Why Run OCR Locally?
Scanned PDFs contain sensitive text. Running OCR on a cloud service exposes that text to a third party. Ours runs 100% offline.
How to OCR a PDF
Load Scanned PDF
Select the image-based or scanned PDF.
Select Language
Choose the document language for better accuracy.
Download Searchable PDF
Get a text-layer PDF ready to search and copy.
100% Secure Local Processing
All operations are performed directly on your local device. We use advanced WebAssembly technology to process your documents without ever uploading them to external servers, ensuring complete privacy.
Scanned Content Never Exposed
OCR processing using Tesseract WASM runs entirely in browser memory — no API calls, no data transmission.
OCR Any Document Locally
Process a 20-page scanned PDF in under 30 seconds. All Tesseract processing happens in-browser.
Tesseract OCR Architecture: Client-Side Neural Recognition
Implements WebAssembly-compiled Tesseract OCR with adaptive two-pass character classification and multilingual neural language models directly in your browser without cloud dependencies.
Academic Reference: Ray Smith (Google Research, IEEE ICDAR 2007)
FAQ
What languages does OCR support?
Over 100 languages via Tesseract engine.
How accurate is the OCR?
Accuracy depends on scan quality; clear, high-contrast scans yield 95%+ accuracy.
Does it create a searchable PDF?
Yes, a text layer is added making the PDF fully searchable.
Can I copy text from the result?
Yes, the output PDF has selectable, copyable text.
Is this free?
Yes, always free.
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