About Scan PDF with OCR Online Free — Optical Character Recognition
Unlock unselectable text trapped in scanned papers, receipts, book scans, and photos. Our on-device OCR engine digitizes printed documents into editable, searchable text without transmitting sensitive files.
Key Features & Capabilities
- High-accuracy Optical Character Recognition (OCR)
- Powered by Tesseract.js running locally via WebAssembly
- Extract text from scanned PDF pages and photos
- Download as selectable text or searchable format
- Zero cloud server uploads — total privacy
How to Perform OCR on Scanned PDFs
Step 1: Choose Scanned PDF
Select your scanned document or image file.
Step 2: Run OCR
Let the WebAssembly OCR engine recognize text from the document images.
Step 3: Copy Extracted Text
Inspect recognized text and download as plain text or copy to clipboard.
Frequently Asked Questions
Does OCR run locally without sending images to the cloud?
Yes! Tesseract OCR runs entirely on your device using WebAssembly.
What image quality is needed for good OCR accuracy?
Crisp scans with 300 DPI and good contrast yield the highest recognition accuracy.
Related Utility Tools
Why Zaeyon?
Private, free, and browser-based — no account, no uploads, no compromises.
Zero Uploads
Your files never leave your device. All processing happens locally in your browser memory — nothing is sent to any server.
100% Free Forever
No subscriptions, no hidden fees, no daily limits. Every tool on Zaeyon is permanently free to use without an account.
Instant & Powerful
Powered by WebAssembly — the same low-level technology used in native apps — so processing is fast even for large files.
Works Offline
Once the page loads, the WebAssembly engine runs entirely on your device. No internet connection needed to process files.
Works Everywhere
No software installation required. Runs directly in your browser on Windows, Mac, Linux, iOS, and Android.