Merge PDFs

Merge PDFs

Merge PDFs is a REST API tool that joins together any number of full PDF files or specified pages from separate documents into a consolidated PDF. It's designed to provide developers with precise control over document assembly, enabling the programmatic merging of PDF files to create organized, streamlined, and optimized consolidated documents for various applications.

Key Benefits of Merge PDFs API

  • Produce optimized output by ensuring merged PDF files are free of unnecessary "bloat," resulting in smaller file sizes and faster user experiences for transfers and viewing.
  • Assemble your perfect document with flexible page range selection, allowing you to choose specific pages or ranges from multiple input PDFs and arrange them in any desired order.
  • Support sophisticated document compilation workflows, such as extracting specific chapters from different reports or combining legal documents with precise page control.
  • Level up with chainable API calls, allowing you to merge various file types (e.g., Word, Excel, images, HTML) into a single PDF by first converting them and then seamlessly merging their outputs without re-uploading.
  • Expedite report compilation and other document assembly tasks by automating the process of combining diverse PDF content into a single, cohesive file.
  • Enhance document management by creating consolidated PDFs that are easier to store, distribute, and access, improving overall organizational efficiency.
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Convert and Merge Multiple Types of Files Together
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Ensure GDPR Compliance for PDF Processing with EU-Based Cloud API
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Why is pdfRest the best API to merge PDF files?
pdfRest offers the best solution for merging multiple PDF documents together, because it produces optimized output, supports flexible page ranges, and can be combined with conversion to merge files of other formats.

Merge without the Bloat

Many tools claim to merge PDF documents together, but most leave the resulting file with unnecessary, redundant content we like to refer to as “bloat.” This can make the file size much bigger than it needs to be and create a much slower user experience for file transfers and viewing.

pdfRest optimizes the content of every merged PDF it creates to ensure the output file contains only what it needs.

Assemble your Perfect Document

pdfRest’s Merge PDFs allows for much more than full document merging. Let’s say you only need page 1 from Document A, pages 3-5 from Document B, and pages 15, 18, and 72 from Document C… no problem! Choose exactly which pages to include from each input file and specify the exact order you need them in the output file.

Level Up with Chainable API Calls

Sometimes you need to merge PDFs together, but other times you may need to merge various file types together into one PDF, such as Word documents with PNG images and HTML files.

pdfRest is purpose-built to support multi-step workflow processes. Simply upload your files of various type to the Convert to PDF tool and pass the resource IDs of each output file from those calls to the Merge PDFs tool. No need to download and upload files between API Calls - simply chain calls together.

Start from Code Examples
See more code examples in our GitHub repository

Need more help?

Start with a Tutorial for step-by-step guidance

How to Merge PDF Files in .NET with C#
How to Merge PDF Files with cURL
How to Merge PDF Files with Java
How to Merge PDF Files with JavaScript in NodeJS
How to Merge PDF Files with PHP
How to Merge PDF Files with Python
How to Programmatically Merge Multiple PDF Files into One
Customize Your Solution

Learn about the parameters for this tool to create your custom solution.

Pages

The pages[] parameter is used to identify pages and/or page ranges that you would like to take from each input document and merge into a single PDF. This is a versatile parameter that allows you to reorder and duplicate pages based on the page numbers and ranges that you specify. Use this parameter once for each file that you would like to merge.

If a page number is included more than once (e.g., “1,2,3,3,4,5”), then the page will be duplicated in the output file. Pages may also be reordered (e.g., “1,5,3,2,4”), and page ranges may be reversed by listing the higher page number first (e.g., “2,4,9-5,12”).

To include all pages from a document, use the range “1-last”. The “last” keyword can also be applied generally to page ranges (e.g., “1-4,6,7-last”).

The pages[] parameter also accepts the keywords “even” and “odd” to select only those pages to merge into your new PDF.

See Documentation

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Confidently process your sensitive data with pdfRest. Our platform is fortified for robust, Enterprise-grade security and compliance, including GDPR, HIPAA, and SOC 2 Type 2 certification in progress. Your data's protection is our priority.

Frequently Asked Questions
Need more help? Contact Us or visit our documentation.

The Merge PDFs API is a REST API tool that combines multiple PDF files or specified pages from various documents into a single, consolidated PDF. This tool is designed to provide developers with precise control over document assembly, making it easy to create organized and streamlined documents.

Yes, the core function of this API is to combine any number of PDF files into one final document. You can include as many input files as needed in a single API call to consolidate them into a unified PDF.

The API merges documents in the order in which they are specified in your API call. This gives you full control over the sequence of pages in the final consolidated PDF, allowing for precise document assembly.

The Merge PDFs API provides several key benefits, including producing optimized output that is free of unnecessary "bloat" for smaller file sizes, offering flexible page range selection for complete control over content, and supporting sophisticated document compilation by integrating with other pdfRest API tools.

You can use the versatile pages[] parameter to choose exactly which pages or page ranges you want to include from each input document. This allows you to combine specific sections, chapters, or individual pages from multiple source files into one new PDF.

Yes. The pages[] parameter allows you to reorder pages by listing them in your desired sequence. It also lets you duplicate a page by simply including its number more than once in the list, providing a powerful way to customize the final document.

Yes, pdfRest's Merge PDFs tool is designed to create optimized output. It removes redundant content or "bloat" that can accumulate during the merging process, resulting in a consolidated PDF with a smaller file size and a faster viewing experience.

Yes, this is a key feature of the pdfRest platform. You can use our chainable API calls to first convert different file types (such as Word documents, images, or HTML) to PDF, and then seamlessly pass the output to the Merge PDFs tool to combine them without needing to download and re-upload the files.

This tool is perfect for automating document assembly tasks such as:

  • Report Compilation: Merging data, charts, and text from various sources into a single, cohesive report.
  • Legal Documents: Consolidating contracts, exhibits, and supporting materials into a master file.
  • Academic Work: Combining research papers, appendices, and references into a final thesis or submission.

Ensuring the security and privacy of your data is a top priority at pdfRest. Our platform is built for robust, enterprise-grade security and compliance, including GDPR and HIPAA. All your files are secured with encryption during both transit and at-rest, and they are permanently deleted after the stated file retention period (30 minutes for most plans). For complete details, please refer to our Data Processing Agreement (DPA).

To facilitate GDPR compliance for your merging workflows, pdfRest processes your data within the European Union and adheres to other strict data protection requirements. You can ensure all processing occurs within the EU by sending your API calls to the dedicated EU endpoint at http://eu-api.pdfrest.com/merged-pdf. Please note that a GDPR usage fee may apply for some plans. For more information, please review our Data Processing Agreement.

Integrating the Merge PDFs API is straightforward. We offer comprehensive API documentation and code samples in many programming languages. The API Lab also allows you to test and generate code snippets directly from your browser, simplifying the setup and ensuring a smooth integration experience.

You can easily merge PDF files without writing any code. Our API Lab is a no-code tool that lets you upload files and send API calls directly from your browser. For an even more streamlined experience, you can also merge PDF files with pdfAssistant.ai, a conversational AI assistant that can combine your documents with a simple chat-based interface.

Yes, pdfRest offers two self-hosted options. The pdfRest API Toolkit on AWS allows you to deploy and manage your own backend processing infrastructure within your AWS environment with pay-as-you-go pricing through the AWS Marketplace. The pdfRest API Toolkit Container provides ultimate environmental control as a Docker Container, giving you the flexibility to run the API in on-premises data centers or public/private cloud environments with a flexible, custom licensing model.

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