Merge PDF using Java

Merge multiple PDF files into single document

Merge PDF features

The Merge PDF Java library allows users to combine multiple PDF files into a single PDF document.

Some key features of Merge PDF Java library include retaining page numbering, eliminating duplicate fonts for improved performance, and generating a table of contents for the merged documents. Additionally, it offers properties like page size to set a consistent page size across the merged document and page orientation to choose between portrait and landscape orientations, ensuring that the final output meets specific formatting requirements.

This Java library is useful for organizing content and reducing the number of separate files by merging them into one.

ConvertAPI Java library install

ConvertAPI provides a Java SDK that allows you to perform a Merge PDF conversion with just a few lines of code. Merge PDF documents using Java programming language with no effort at all!

        # Add the following dependency to your pom.xml:
    
        <dependency>

   <groupId>com.convertapi.client</groupId>

   <artifactId>convertapi</artifactId>

   <version>2.10</version>

</dependency>

Maven GitHub

Authenticate your Java library

You can obtain your secret key by signing up for a free account. Once you sign up, you'll receive 250 free conversions instantly! Grab your authentication secret from the account dashboard, and authenticate the ConvertAPI Java library like this:

# get your secret key here: https://www.convertapi.com/a/auth


        use \ConvertApi\ConvertApi;

        Config.setDefaultApiCredentials("secret_or_token");

Merge PDF using Java in no time!

Once you have your authentication in place, simply copy-paste this pdf to merge conversion code snippet into your Java project:

// Code snippet is using the ConvertAPI JavaScript Client: https://github.com/ConvertAPI/convertapi-js

// Code snippet is using the ConvertAPI Node.js Client: https://github.com/ConvertAPI/convertapi-nodejs

// Code snippet is using the ConvertAPI PHP Client: https://github.com/ConvertAPI/convertapi-php

// Code snippet is using the ConvertAPI Java Client: https://github.com/ConvertAPI/convertapi-java

// Code snippet is using the ConvertAPI C# Client: https://github.com/ConvertAPI/convertapi-dotnet

# Code snippet is using the ConvertAPI Ruby Client: https://github.com/ConvertAPI/convertapi-ruby

# Code snippet is using the ConvertAPI Python Client: https://github.com/ConvertAPI/convertapi-python

// Code snippet is using the ConvertAPI Go Client: https://github.com/ConvertAPI/convertapi-go

REM Code snippet is using the command line utility program: https://github.com/ConvertAPI/convertapi-cli

Try the conversion online - no coding required!

You can try out advanced conversion parameters and test the conversion result online using our interactive demo tool. This tool will produce the same conversion output as if you were using the library from your solution, and it will auto-generate the code snippet for you!

Try for FREE!

Conversion parameters

Password String

Sets the password to open protected documents.

RetainNumbering Bool

Keeps the original PDF labels numbering rather than re-numbering merged PDF from the 1 page.

RemoveDuplicateFonts Bool

Do not include the same fonts from source PDFs while merging.

BookmarksToc Collection

Adds a top-level bookmark for each file, using the filename or PDF title from metadata.

Values: disabled filename title

PageSize Collection

The property scales each page to fit a given page size.

Values: default a0 a1 a2 a3 a4 a5 a6 a7 a8 a9 a10 letter legal

PageOrientation Collection

Set page orientation, works only along with PageSize property.

Values: default portrait landscape

OpenPage Integer

Set the page number at which the PDF document should open.