How to use API to combine PDF files into one?

Open the site: Merge PDF files . Drag and drop PDF files to join them. Or just use a code example in Java. Install Java SDK and add the reference (import the library) to your Java project. Open the source PDF file in Java. Load a document to append from the Cloud storage. Call the appendDocumentOnline() method, passing the output filename with the required extension. Get the combined result as a single file.

What other file formats can I merge my PDF to?

We support a variety of output file formats, including Microsoft Word, OpenOffice, PDF, Web document formats and many more.

What is the maximum size of a PDF file supported by this Java library?

There are no file size limits for merging PDF files with our Java SDK.

Java Merge PDF REST API

Combine PDF using Java REST API

Easily merge PDF files together in Java code. This Java library is designed to combine multiple PDF files into a single file using the REST API, i.e. by passing HTTPS calls over the Internet.

This is a professional Cloud-native PDF merging solution that provides Java programmers with both great development flexibility and powerful features. Joining PDF files together is often used when it is necessary to create a set of documents of the same structure, each of which contains unique data. By merging PDF files, you can automate your digital workflows and offload some routine parts of the process to fast and efficient PDF processing Java software.

Merge multiple PDF into one in Java

You may need to combine PDF files together in many cases. For example, you may want to combine multiple PDF files together before printing or archiving.

PDF merging can be part of a whole integrated document-processing approach for generating documents from disparate data sources. Such tasks involve the use of a full-featured PDF manipulation Java library that will process a set of PDF files and merge them together in the shortest possible time, producing a compact and accurate result.

Merge PDF files in Java

To merge PDF in Java, you need at least two source PDF files. For a quick start, please check out the Java code example below.

Java code example to merge PDF files using REST API

Input files

Upload files you want to combine

Run code

Upload files you want to combine

Output format

Select the target format from the list

import com.aspose.words.cloud.*;

ApiClient apiClient = new ApiClient("####-####-####-####-####", "##################", null);
WordsApi wordsApi = new WordsApi(apiClient);

byte[] document = Files.readAllBytes(Paths.get(
   "Input1.pdf").toAbsolutePath());

DocumentEntry mergeDocument = new DocumentEntry();
// Load a document to append from the Cloud storage.
mergeDocument.setFileReference(new FileReference("Input2.pdf"));
mergeDocument.setImportFormatMode("KeepSourceFormatting");

ArrayList documentEntries = new ArrayList();
documentEntries.add(mergeDocument);
DocumentEntryList documentList = new DocumentEntryList();
documentList.setDocumentEntries(documentEntries);

AppendDocumentOnlineRequest appendDocumentOnline = 
   new AppendDocumentOnlineRequest(document, documentList, 
      null, null, null, null, null, null);
wordsApi.appendDocumentOnline(appendDocumentOnline);

					Run code
				

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How to merge PDF Java REST API

Install Java SDK and add the reference (import the library) to your Java project.
Open the source PDF file in Java.
Load a document to append from the Cloud storage.
Call the appendDocumentOnline() method, passing the output filename with the required extension.
Get the combined result as a single file.

Java library to join PDF files into a single file

Install 'Aspose.Words Cloud SDK for Java' using Maven build automation tool.

Add this dependency to your project's POM: aspose-cloud artifact.aspose-cloud-releases http://artifact.aspose.cloud/repo com.aspose aspose-words-cloud 22.4.0

As an alternative, you can clone Aspose.Words Cloud SDK for Java source code from GitHub and use it in your project. Please follow these Instructions to quickly get the necessary security credentials and access our REST API.

System Requirements

Refer to the Repository Documentation to see the details.

You can use other popular formats:

Java API to combine PDF files programmatically

Java SDK to combine PDF files and export the result to a wide variety of files formats