How to use this tool
Step 1: Upload Scan
Select your scanned PDF file or image.
Step 2: Choose Language
Select the primary language of the text.
Step 3: Perform OCR
Click scan to start local text recognition using Tesseract WASM.
Step 4: Copy Text
Copy the recognized text or download it.
Frequently Asked Questions
How does local browser OCR work?
We use Tesseract.js, a WebAssembly port of the famous Tesseract OCR engine, which runs directly in your browser tab without any cloud servers.
Why does the OCR scan take longer than other tools?
OCR is a computationally heavy machine learning task. It processes pixel-by-pixel to recognize letters, running entirely on your local CPU.
Are my PDF files uploaded to any server?
No. Your PDF files are processed entirely in your web browser using WebAssembly. Your files never leave your device.
Is there a limit on the file size or page count?
No. Since the processing runs locally on your computer, there are no hard limits enforced by our server. It only depends on your system's memory (RAM).
Is this PDF tool completely free?
Yes, all PDF tools on Zaeyon are 100% free with no limits, no registration, and no ads or watermarks.
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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.