How to Convert PDF Files to Images Using PDFBox?

Using PDFBox to Convert PDF Files to Images

Introduction

PDFBox is a popular open-source Java library for working with PDF documents. Among its many capabilities, PDFBox allows developers to convert PDF files into images, facilitating the extraction of individual pages as image formats. This tutorial will guide you through the process of using PDFBox to achieve this conversion.

Sample Code for Conversion

Solution for PDFBox 1.8.* versions:

PDDocument document = PDDocument.loadNonSeq(new File(pdfFilename), null);
List<PDPage> pdPages = document.getDocumentCatalog().getAllPages();
int page = 0;
for (PDPage pdPage : pdPages) {
    ++page;
    BufferedImage bim = pdPage.convertToImage(BufferedImage.TYPE_INT_RGB, 300);
    ImageIOUtil.writeImage(bim, pdfFilename + "- " + page + ".png", 300);
}
document.close();

Solution for PDFBox 2.0 version:

PDDocument document = PDDocument.load(new File(pdfFilename));
PDFRenderer pdfRenderer = new PDFRenderer(document);
for (int page = 0; page < document.getNumberOfPages(); ++page) {
    BufferedImage bim = pdfRenderer.renderImageWithDPI(page, 300, ImageType.RGB);
    ImageIOUtil.writeImage(bim, pdfFilename + "- " + (page + 1) + ".png", 300);
}
document.close();

Solution for PDFBox 3.0 versions:

PDDocument document = Loader.loadPDF(new File(pdfFilename));
// The rest of the code is similar to the PDFBox 2.0 solution.

Additional Considerations

• Ensure that you have logging enabled and use the latest available JDK version.
• The ImageIOUtil class is available as a separate download/artifact in PDFBox versions 2.0 and 3.0.
• For dependencies and additional configurations, refer to the PDFBox documentation for the respective version you are using.

The above is the detailed content of How to Convert PDF Files to Images Using PDFBox?. For more information, please follow other related articles on the PHP Chinese website!