Guides

Convert PDF to Searchable PDF

Overview

To make a searchable PDF by adding invisible text to an image based PDF such as a scanned document using OCR.

Sample

Full code sample which shows how to use the ComPDFKit OCR module on scanned documents in multiple languages.

ConvertOptions opt;
opt.enable_ocr = true;

LibraryManager::SetOCRLanguage(OCRLanguage::e_English);
CPDFConversion::StartPDFToSearchablePdf("scan.pdf", "password", "path/output.pdf", opt);

LibraryManager::SetOCRLanguage(OCRLanguage::e_Chinese);
CPDFConversion::StartPDFToSearchablePdf("scan.pdf", "password", "path/output.pdf", opt);