Convert PDF to PDF/A with a free Java API

PDF/A is a kind of PDF format designed for archiving and long-term preservation of electronic documents. Unlike paper documents that are easily damaged or smeared, PDF/A format ensures that documents can be reproduced in exactly the same way even after long-term storage. This article will demonstrate how to convert PDF to PDF/A-1A, 2A, 3A, 1B, 2B and 3B compliant PDF using Free Spire.PDF for Java.

Import jar dependency (2 Methods)
● Download the Free Spire.PDF for Java and unzip it.Then add the Spire.Pdf.jar file to your project as dependency.

● Directly add the jar dependency to maven project by adding the following configurations to the pom.xml.

<repositories>
        <repository>
            <id>com.e-iceblue</id>
            <name>e-iceblue</name>
            <url>http://repo.e-iceblue.com/nexus/content/groups/public/</url>
        </repository>
</repositories>
<dependencies>
    <dependency>
        <groupId>e-iceblue</groupId>
        <artifactId>spire.pdf.free</artifactId>
        <version>4.3.0</version>
    </dependency>
</dependencies>

Code Snippet

import com.spire.pdf.conversion.PdfStandardsConverter;

public class ConvertPdfToPdfA {
    public static void main(String[] args) {

        //Specify input file path
        String inputFile = "C:/Users/Administrator/Desktop/sample.pdf";

        //Specify output folder
        String outputFolder = "C:/Users/Administrator/Desktop/Output/";

        //Create a PdfStandardsConverter instance, passing in the input file as a parameter
        PdfStandardsConverter converter = new PdfStandardsConverter(inputFile);

        //Convert to PdfA1A
        converter.toPdfA1A(outputFolder + "ToPdfA1A.pdf");

        //Convert to PdfA1B
        converter.toPdfA1B(outputFolder + "ToPdfA1B.pdf");

        //Convert to PdfA2A
        converter.toPdfA2A(outputFolder + "ToPdfA2A.pdf");

        //Convert to PdfA2B
        converter.toPdfA2B(outputFolder + "ToPdfA2B.pdf");

        //Convert to PdfA3A
        converter.toPdfA3A(outputFolder + "ToPdfA3A.pdf");

        //Convert to PdfA3B
        converter.toPdfA3B(outputFolder + "ToPdfA3B.pdf");
    }
}

Output