PDF OCR
Make scanned PDFs searchable by adding an invisible text layer using Tesseract OCR. A premium feature elsewhere — completely free here. No signup, 100% client-side.
Private & Secure
OCR runs entirely in your browser using Tesseract.js. Your scanned documents never leave your device.
Searchable Output
Adds an invisible text layer over scanned pages so you can search, select, and copy text in any PDF reader.
Frequently Asked Questions
Upload your scanned PDF to Toolsz PDF OCR, and the tool adds an invisible text layer using Tesseract OCR. The PDF becomes fully searchable while keeping the original visual appearance. Free, no signup, 100% client-side.
Toolsz is one of the only free client-side PDF OCR tools. Most OCR tools charge for this premium feature — Adobe Acrobat OCR requires a subscription, and iLovePDF OCR is a premium feature. Toolsz does it free with no signup.
Tesseract OCR analyzes each page of your scanned PDF, recognizes text characters using AI trained on millions of documents, and adds an invisible text layer behind the original scan. You can then search, select, and copy text from the previously unsearchable PDF.