Search and Highlight Text in PDF in Java

Highlighting text can help users quickly jump to the location of the text in a document. In this blog, I will introduce how to search specific text in a PDF document and highlight the searched text in Java application.

The below example uses Free Spire.PDF for Java library.

The sample PDF document looks like below:

import com.spire.pdf.PdfDocument;
import com.spire.pdf.PdfPageBase;
import com.spire.pdf.general.find.PdfTextFind;

import java.awt.*;

public class HighlightText {
    public static void main(String[] args) throws Exception
    {
        //load the PDF file
        PdfDocument pdf = new PdfDocument();
        pdf.loadFromFile("Additional.pdf");

        PdfTextFind[] result;
        //loop through the pages in the PDF file
        for(PdfPageBase page:(Iterable<PdfPageBase>) pdf.getPages())
        {
            //search the text "The Man Who Laughs" on every PDF page
            result = page.findText("The Man Who Laughs").getFinds();
            //highlight the searched text with yellow color
            for (PdfTextFind find:result)
            {
                find.applyHighLight(Color.yellow);
            }
        }

        //save the resultant file
        pdf.saveToFile("HighlightText.pdf");
    }
}

Screenshot after highlighting:

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