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.

Set Transparent Text Layer

When outputting a searchable PDF, you can use the following option to control the hidden text layer:

• TransparentText: Whether to output a transparent text layer.

Sample

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

inputFilePath := "***"
password := "***"
outputFileName := "***"

pdfOptions := compdf.NewSearchablePdfOptions()
pdfOptions.EnableOCR = true
err := compdf.StartPDFToSearchablePDF(inputFilePath, password, outputFileName, pdfOptions, nil)