Compare the Top On-Premises PDF Merge Software as of November 2025

What is On-Premises PDF Merge Software?

PDF merge software tools enable users to combine PDFs into a single PDF file. PDF merge tools simplify the process of combining multiple separate PDF files or other documents, like Word documents, into one single PDF document. Compare and read user reviews of the best On-Premises PDF Merge software currently available using the table below. This list is updated regularly.

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    Pdftools

    Pdftools

    PDF Tools

    Whether you have thousands of documents or millions, Pdftools has the products and services to help make processing a breeze. Designed for document-heavy industries, Pdftools’ suite of SDKs and APIs are here to make your document workflows easier, faster, and stress-free. Built on SDKs and APIs, the Pdftools products integrate seamlessly into your existing (or new) systems and applications. Process thousands of documents every minute. Our tools are precision-engineered to be efficient and run at blazing speeds. We’re engineers at heart, so we’re only satisfied with the most reliable, orderly, and usable, and well-documented platforms. Shrink file sizes down, but keep the quality and interactivity. Your documents will always be compliant for long-term archiving. We’ve obsessed over every detail in our products, and documented everything so it’s easy to get started.
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    Starting Price: $0/month/user
  • 2
    Adobe PDF Library SDK

    Adobe PDF Library SDK

    Datalogics Inc.

    Developers rely on Datalogics to provide the most comprehensive PDF SDKs in the industry. We are SOC 2 Type 2 certified. Global OEMs, SaaS and enterprise end-users rely on Adobe PDF Library to automate the creation, editing and management of PDFs. An Adobe partner, our SDK uses the same source code as Acrobat for stability, reliability and quality results. Flexible programming language and platform options include .NET, .NET Framework, Java and C/C++ on Windows, Linux, MacOS; NuGet & Maven; pdfRest API Toolkit Container option. Our extensive documentation includes getting started guides, API references, and hundreds of sample code examples on GitHub to help developers precisely create and define PDF workflow solutions. Free trial with proof of concept support, join us on Discord or use our AI assistant for help, or set up a time to talk to one of our engineers about your project. Our expertise and support is the reason we have a 91% customer retention rate.
    Starting Price: $5,999
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    Lua

    Lua

    Lua PDF

    Lua is a free online PDF converter. No download required! Convert PDF to Word DOC, Excel, JPG, PNG, PPT and HTML files, or convert to PDF on the cloud. Follow these steps to combine/merge PDF online: 1. Click Choose PDF Files and select the PDF files you want to merge. 2. PDF Combiner will start the merger job immediately. 3. Wait for the tool to finish the task. 4. Your PDF files will be merged into a single document.
    Starting Price: Free
  • 4
    ZeeConvert

    ZeeConvert

    ZeeConvert

    ZeeConvert is an all-in-one online toolkit designed to help users manage and optimize their digital files with ease. Whether you’re a professional, student, or casual user, ZeeConvert offers a fast, free, and user-friendly way to convert, compress, crop, and resize your images and documents — all without needing to install any software. With ZeeConvert, you can quickly reduce the size of large PNG or JPG images to save storage or improve web performance, convert images into different formats like PNG, JPG, or WebP, and even crop or resize pictures to fit your exact needs. The tools are fully browser-based and work on all devices, making it accessible anytime, anywhere. The platform is designed with simplicity in mind — just upload your file, choose your desired settings, and download the optimized result within seconds. We prioritize data privacy, so your files are never stored or shared.
    Starting Price: $0
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