OCR is exactly what shouldn't be uploaded
Think about what people OCR: identity documents, bills, contracts, prescriptions, salary slips, whiteboards from internal meetings. Every other OCR site ships those images to a server. Here the Tesseract engine — the most-used open-source OCR in the world — runs as WebAssembly inside your browser tab. Load the page once and you can switch off the internet and keep extracting.
Getting the best read
OCR loves flat, sharp, well-lit printed text. Photograph the page straight-on and fill the frame; screenshots read near-perfectly as they are. Each result carries a confidence score, so you know when to trust it and when to re-shoot. Handwriting is honestly out of scope — that needs cloud-scale models. For scanned PDFs, use PDF to Text, which runs this same OCR across every page at 300 DPI; for text living in a Word file, the Word converter extracts it without OCR at all.