OCR PDF Scanner Online
Extract text from scanned PDF documents and image files. Convert unsearchable PDFs into editable text directly on your device.
File Ready for OCR:
scanned_doc.pdf
0 MB
Initializing OCR engine...
0%How to Extract Text from Scanned PDFs
Transform unsearchable documents into editable text in three easy steps.
Upload File
Select the image-based or scanned PDF document from your system or drag it directly onto the upload area.
Choose Settings
Pick the language matching the document text and ensure image optimization is checked for maximum clarity.
Scan & Export
Initiate the OCR scan. Once completed, easily copy the resulting text to your clipboard or download as a .txt file.
Why Use Our In-Browser OCR Tool?
Total Data Privacy
Zero cloud uploads. Your invoices, receipts, and medical scans are analyzed strictly within your device's browser memory.
Advanced Tesseract Engine
Powered by the industry-leading WebAssembly port of Tesseract OCR, delivering high recognition accuracy across multiple languages.
Free & Unlimited
No daily scan limits, no account registration barriers, and no hidden subscriptions to convert your documents to text.
Frequently Asked Questions
Common answers regarding scanned PDF text extraction.
How does client-side OCR processing work?
Our tool uses PDF.js to render document pages into high-resolution canvas elements locally, and then applies Tesseract.js (WebAssembly) to recognize and extract characters directly inside your device's memory.
Is my scanned document uploaded to any server?
No. The entire Optical Character Recognition (OCR) process runs securely and privately within your local web browser. Your sensitive files are never uploaded or transmitted over the internet.
What languages are supported for text extraction?
Currently, the tool supports English, Indonesian, Spanish, French, and German text extraction. We also offer mixed-language support (like English + Indonesian) in a single pass.
Why is the OCR process taking time?
Because processing happens locally on your device rather than a remote cloud server, extraction speed relies entirely on your computer or phone's CPU performance. Multi-page PDFs will naturally take longer to scan completely.
How can I improve the accuracy of extracted text?
Ensure your scanned PDF has a high resolution (minimum 200 DPI). Additionally, leave the 'Auto Contrast & Sharpening' checkbox enabled in the settings, which helps normalize grey pixels and enhances text borders before scanning.