Merge PDF using PHP

Merge multiple PDF files into single document

Merge PDF PHP library allows developers to combine multiple PDF files into a single document, reducing the time and effort required to manage large numbers of individual PDF files. Some of the key features of Merge PDF PHP library include retaining page numbering, eliminating duplicate fonts for improved performance, and even generating a table of contents for the merged documents. In addition, merge PDF PHP library is a RESTful PHP library, which means it can be easily integrated into any application or website. All that's required is a simple PHP library call, and the PDF files will be merged into a single document.

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File conversion library for PHP

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

        Execute the following command in your project root:
    
composer require convertapi/convertapi-php

Or install it manually using ConvertApi autoloader:

Following extensions are required: curl & json

require_once('/path/to/convertapi-php/lib/ConvertApi/autoload.php');

Composer GitHub

How To Merge PDF using PHP?

You can Merge PDF in a few simple steps:

Obtain your secret key by signing up for a free account.
Install the ConvertAPI library for PHP
Set up the Merge PDF conversion using our live demo tool
Copy-paste the auto-generated code snippet into your project!

Merge PDF - complete code snippet for PHP

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

Upload the file and see how it works

You can set up the advanced conversion parameters and test the conversion result online using our interactive demo tool. It will auto-generate the code snippet for you!

Advanced Merge PDF 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.