Introduction
PDF manipulation is a common requirement for Java developers working on document management systems, automation tools, or business applications. Whether you need to add pages, resize content, insert watermarks, or annotate files, having a reliable and easy-to-use Java PDF SDK is essential.
JPedal’s PDF Manipulation Toolset
Recently, we added some new PDF manipulation features to our Java PDF SDK JPedal. JPedal is the best Java PDF library for developers.
These features include:
- Add a new page
- Remove a page
- Resize a page
- Resize a page’s content
- Add text to a page
- And more…
Today I’m going to show you how to perform some basic edits to a PDF document
Getting Started
First, you need to create a new instance of PdfManipulator.
final PdfManipulator pdf = new PdfManipulator();
Next, you need to load the desired document. You may load a PDF from a
File or a byte[].
pdf.loadDocument(new File("inputFile.pdf"));
Resize Page Content
Now, let’s shrink the content on the first page, leaving a gap at the top.
pdf.scalePageContent(1, 1.0f, 0.8f, ScalePageContent.BOTTOM);
Add Text to a Page
In the newly created space, we can add some text.
final float[] mediabox = pdf.getPageMediaBox(1);
pdf.addText(1, "Hello World", mediabox[2] / 2, mediabox[3] – 30, BaseFont.Helvetica, 12, 1, 0.3f, 0.2f);
Now we need to apply the manipulations and write the result to a new file.
pdf.apply();
pdf.writeDocument(new File("outputFile.pdf"));
Finally, we should close the document to free resources. You can optionally reset the
PdfManipulator to remove the manipulations from its queue.
pdf.closeDocument();
Comparison: Before vs After
Conclusion
With JPedal’s new PDF manipulation features, editing PDF documents in Java is easier and more flexible than ever. Try out these features in your next Java project, and let us know what other PDF editing capabilities you’d like to see!
The JPedal PDF library allows you to solve these problems in Java
//Convenience static method (see class for additional options)
ExtractClippedImages.writeAllClippedImagesToDir("inputFileOrDirectory", "outputDir", "outputImageFormat", new String[] {"imageHeightAsFloat", "subDirectoryForHeight"});
final PdfManipulator pdf = new PdfManipulator();
pdf.loadDocument(new File("inputFile.pdf"));
pdf.addPage(1, PaperSize.A4_LANDSCAPE);
pdf.addText(1, "Hello World", 10, 10, BaseFont.HelveticaBold, 12, 1, 0.3f, 0.2f);
pdf.addImage(1, new BufferedImage(), new float[] {0, 0, 100, 100});
pdf.rotatePage(1, 90);
pdf.apply();
pdf.writeDocument(new File("outputFile.pdf"));Viewer viewer = new Viewer();
viewer.setupViewer();
viewer.executeCommand(ViewerCommands.OPENFILE, "pdfFile.pdf");
//Convenience static method (see class for additional options)
ExtractTextAsWordList.writeAllWordlistsToDir("inputFileOrDirectory", "outputDir", -1);
PdfMerge.mergeFiles(new File("inputFile1.pdf"), new File("inputFile2.pdf"), new File("outputFile.pdf"));
PdfManipulator.splitInHalf(new File("inputFile.pdf"), new File("outputFolder"), pageToSplitAt);PrintPdfPages print = new PrintPdfPages("C:/pdfs/mypdf.pdf");
if (print.openPDFFile()) {
print.printAllPages("Printer Name");
}//Convenience static method (see class for additional options)
ExtractClippedImages.writeAllClippedImagesToDir("inputFileOrDirectory", "outputDir", "outputImageFormat", new String[] {"imageHeightAsFloat", "subDirectoryForHeight"});
//Convenience static method (see class for additional options)
ArrayList resultsForPages = FindTextInRectangle.findTextOnAllPages("/path/to/file.pdf", "textToFind");
java -jar jpedal.jar --inspect "inputFile.pdf"PdfSigner.signPdf(
"inputFile.pdf",
"outputFile.pdf",
"keystorePassword",
"keystoreFile.p12",
"signerName",
"signerLocation",
"signingReason",
ACCESS_PERMISSION.P1
);What is JPedal?
JPedal is a commercial Java PDF Library that makes it easy for Java developers to work with PDF Documents in Java.
Why use JPedal?
JPedal makes it much easier to work with PDF files from Java. Because we have been actively developing our Java PDF Toolkit for over 20 years, it works with all those problem PDF files out there.
What licenses are available?
We have 2 licenses available:
'Server' for on premises and cloud servers and 'OEM' for use in a named end user applications. Both are one time fees with options support renewal after 12 months.
How to use JPedal?
Want to learn more about JPedal and how to use it, we have plenty of tutorials and guides to help you.
