Extract Text from Image Scans and Scanned PDFs Offline
Welcome to Download In PDF's OCR Tool. Whether you need to copy a quote from a printed book, digitize bills, or parse table data from screenshot images, running optical character recognition helps convert flat image scans into search-ready, editable text formats.
Local Text Recognition Safeguards Your Data
Scanned records like bills, bank receipts, ID cards, and business forms contain sensitive details. Uploading scans to internet-based cloud converters exposes you to server leaks and privacy violations. Our OCR tool operates **100% locally in your browser sandbox** using the web-compiled port of **Tesseract.js**. No document image or extracted text is transmitted to our servers—keeping your information completely private.
How Tesseract Web Workers Work
Once you trigger the OCR scan, Tesseract.js spins up an isolated Web Worker thread in your browser. This worker processes character recognition layers (contrast adjustments, baseline checks, matrix matching) locally in parallel, without locking up your browser tab UI. The extracted text is rendered directly into an editable textbox.