Add Apache PDFBox and Apache PDFBox Tools dependencies on Maven.
<dependency>
<groupId>org.apache.pdfbox</groupId>
<artifactId>pdfbox</artifactId>
<version>2.0.26</version>
</dependency>
<dependency>
<groupId>org.apache.pdfbox</groupId>
<artifactId>pdfbox-tools</artifactId>
<version>2.0.26</version>
</dependency>
Convert each PDF page as a separated Tiff file
For the following pieces of code, you will need a String variable pdfFilename with the path and name of the PDF file. 1 It will be used to load the PDF file and write the Tiff files.
PDDocument document = PDDocument.load(new File(pdfFilename));
PDFRenderer pdfRenderer = new PDFRenderer(document);
int pageCounter = 0;
for (PDPage page : document.getPages())
{
BufferedImage bim = pdfRenderer.renderImageWithDPI(pageCounter, 300, ImageType.RGB);
ImageIOUtil.writeImage(bim, pdfFilename + "-" + (pageCounter++) + ".tiff", 300);
}
document.close();
- Note that the page number parameter is zero based.
- The
renderImageWithDPIthird parameter accepts the following values:ImageType.RGB,ImageType.ARGBandImageType.BGRfor colored images;ImageType.GRAYfor grayscale images;ImageType.BINARYfor pure black and white images.
- The suffix in
ImageIOUtil.writeImagesecond parameter will be used as the file format.
Convert a multi-page PDF into a multi-page Tiff
You can write multi-page images (in formats that support it, like Tiff) using the standard ImageIO API starting from Java 9. 2
PDDocument document = PDDocument.load(new File(pdfFilename));
PDFRenderer pdfRenderer = new PDFRenderer(document);
FileImageOutputStream output = new FileImageOutputStream(new File(pdfFilename + ".tiff"));
ImageWriter writer = ImageIO.getImageWritersByFormatName("TIFF").next();
writer.setOutput(output);
writer.prepareWriteSequence(null);
int pageCounter = 0;
for (PDPage page : document.getPages())
{
BufferedImage bim = pdfRenderer.renderImageWithDPI(pageCounter++, 300, ImageType.RGB);
writer.writeToSequence(new IIOImage(bim, null, null), null);
}
writer.endWriteSequence();
writer.dispose();
output.close();
document.close();
- Note that the page number parameter is zero based.
- The
renderImageWithDPIthird parameter accepts the following values:ImageType.RGB,ImageType.ARGBandImageType.BGRfor colored images;ImageType.GRAYfor grayscale images;ImageType.BINARYfor pure black and white images.