Make scanned PDFs searchable. Our free OCR tool reads the text out of image-based pages so you can copy, search, and reuse it — fast, secure, and right in your browser.
Yes. You can run OCR on a scanned PDF to extract its text right here online for free — no account, email, or credit card required. Sign up only if you want higher limits, larger files, or API access.
Yes. Uploads travel over an encrypted HTTPS connection, are processed on our servers, and are automatically deleted within a few hours. We never share or sell your documents.
No. PDF4 works entirely in your web browser, so there is nothing to download or install. It runs on Windows, macOS, Linux, Android, and iOS.