DemoFAQ

PDF Generation Template Editor

Open-source visual PDF generation engine with customizable templates and developer-friendly APIs.

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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.

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

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