Split PDF Files in Java

There could be various cases when you need to split a PDF into multiple PDF files. For example, you may have to split each page of the PDF containing invoices/receipts and save them as separate files. On the other hand, you may want to split a particular collection of pages from a PDF file. In order to deal with the above-mentioned scenarios, this article covers how to split a PDF file into multiple PDFs using Java.

Java API to Split PDF Files – Free Download

In order to split the PDF files, we’ll leverage the PDF manipulation capabilities of Aspose.PDF for Java. The API lets you perform a PDF splitting operation within a few steps. You can either download the API or install it within your Maven-based applications using the following configurations.

<repository>
    <id>AsposeJavaAPI</id>
    <name>Aspose Java API</name>
    <url>https://repository.aspose.com/repo/</url>
</repository>

<dependency>
    <groupId>com.aspose</groupId>
    <artifactId>aspose-pdf</artifactId>
    <version>20.12</version>
    <classifier>jdk17</classifier>
</dependency>

Split a PDF File using Java

The PDF splitting criteria may vary in different scenarios as per requirements. First, let’s check out how to split a PDF file by pages and save each page as a separate PDF. The following are the steps to perform this operation.

The following code sample shows how to split a PDF file using Java.

// Open document
Document pdfDocument = new Document("input.pdf");
// For page counter
int pageCount = 1;
// Loop through all the pages
for (Page pdfPage : pdfDocument.getPages()) {
// Create a new document
Document newDocument = new Document();
// Add page to the document
newDocument.getPages().add(pdfPage);
// Save as PDF
newDocument.save("page_" + pageCount + "_out" + ".pdf");
pageCount++;
}
view raw split-pdf.java hosted with ❤ by GitHub

Split a PDF File by Page Collection using Java

For the demonstration, let’s have a look at another PDF splitting scenario. In this example, we will split a PDF based on even and odd page numbers. The following are the steps to perform this operation.

The following code sample shows how to split even and odd pages in a PDF file using Java.

// Open document
Document pdfDocument = new Document("input.pdf");
// Create array lists for even and odd pages
List<Page> evenPages = new ArrayList<Page>();
List<Page> oddPages = new ArrayList<Page>();
// Loop through all the pages
for (Page pdfPage : pdfDocument.getPages())
{
if(pdfPage.getNumber()%2==0)
{
evenPages.add(pdfPage);
}
else
{
oddPages.add(pdfPage);
}
}
// Save even pages as PDF
Document newDocument = new Document();
newDocument.getPages().add(evenPages);
newDocument.save("split_even_Pages.pdf");
// Save odd pages as PDF
newDocument = new Document();
newDocument.getPages().add(oddPages);
newDocument.save("split_odd_Pages.pdf");
view raw split-pdf-even-odd.java hosted with ❤ by GitHub

Get a Free License

You can get a free temporary license in order to try the API without evaluation limitations.

Conclusion

In this article, you have learned how to split a PDF file using Java. Furthermore, you have seen how to customize the PDF splitting criteria as per requirements. You can explore more about the API using the documentation.

See Also