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Top Rated PDF Software with Merge/Append Files in 2026 - Page 3

Last updated: March 2026

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85 software options

Pdftools logo

PDF SDKs and services for high-volume document processing.

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Pdftools offers a comprehensive PDF suite for compression, conversion, generation, editing, digital signatures, OCR, and PDF/A.






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CleverPDF logo

Free online PDF conversion tools

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CleverPDF provides free online PDF conversion tools including PDF to Office, iWork conversion, Office to PDF, compress PDF, merge/split PDF, and more. Offline version for Windows and Mac is also available.

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Doc Converter Pro logo

File conversion software for PDF, HTML, and Word

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Doc Converter Pro is a PDF solution that helps businesses batch convert files in multiple formats, such as Word, HTML, Open Doc and PDF from within a unified platform. It enables team members to utilize a drag-and-drop interface to add, select, and convert multiple files or folders at the same time.

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Readiris PDF logo

Smart PDF tool to convert, edit, compress, eSign & automate

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Smart PDF software to convert, merge, edit, compress & eSign files. Includes OCR, form filling & automation. Try Readiris™ PDF now!

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UniDoc logo

Pure Go Lang

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UniDoc's UniPDF is a PDF library for Go (golang) with capabilities for creating and reading, processing PDF files. The library is written and supported by FoxyUtils.

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GorillaPDF logo

PDF Converter For Busy People.

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GorillaPDF is online platform toolset for converting different files formats to PDF and vice versa. It features PDF compression, merging, encrypting, unlocking, and reading PDF files. From the file formats, it converts Words, Excel and PowerPoint to PDF. It also converts JPG and PNG to PDF.

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PDF Xpansion SDK logo

Tools for implementing PDF, PDF/A & eInvoicing functionality

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The PDF Xpansion SDK is a set of developer tools for implementing PDF, PDF/A & eInvoicing functionality into applications.

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iText logo

OCR, PDF and document management platform

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iText by Apryse is a software developer platform written in Java and .NET helps integrate PDF functionalities within applications or products.

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PDFpen logo

PDF generation tool

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Nitro PDF Professional is the all-in-one solution for editing your PDF documents and forms, converting any type of file into a PDF, editing PDFs quickly and easily, signing and filling out PDFs with electronic signatures, scanning documents (including receipts), and importing text from images.

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MacMister MBOX Converter logo

MBOX converter to batch convert MBOX files on macOS

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MacMister MBOX Converter for Mac to convert unlimited MBOX files to PDF, EMLx, MSG, G Suite, Gmail, Office 365, Thunderbird, PST, IMAP Server, MHT, HTML, DOC, and more. Use MBOX Converter for Mac free software download edition and convert 25 MBOX files into the required saving option free of cost.

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HiPDF logo

All-in-one to create, edit, convert, and share PDF documents

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Wondershare HiPDF is an AI-powered online PDF solution that offers a wide range of features such as chatting with PDF, AI reading, editing, converting, and managing PDF documents.

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SwifDoo PDF logo

A full-featured PDF editor

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At SwifDoo PDF, we provide a useful and quick solution to all your PDF relevant needs, from editing and organizing to converting and protecting PDFs.

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Doxillion logo

Quick and easy to use multi-format document file converter.

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Multi-format document converter that enables you to convert DOC, DOCX, PDF, WPS, Word, and many other file types.

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PDF-Mapper logo

Automatic PDF order & invoice capture with 100% accuracy

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PDF-Mapper 100 % automates your data entry process with flawless accuracy and easy implementation. It is the cost-effective, fast & simple alternative to EDI integrations.

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PDF Suite logo

Read, create, edit, convert, and secure any PDF file

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PDF Suite is an all-in-one PDF management tool with advanced features and strong security for reading, editing, securing, converting, and printing PDFs.

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AI PDF Scanner: Camera Scan App logo

Cloud-based OCR platform for document scanning.

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AI PDF Scanner: Camera Scan App is a cloud-based optical character recognition (OCR) solution that helps streamline document management for iPhone and iPad users. The platform leverages artificial intelligence (AI) technology to transforms mobile devices into a professional-grade PDF scanner, enabling users to capture, edit, and organize documents with ease. Its optical character recognition (OCR) capability allows users to convert scanned documents into editable text.

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CIB pdf standalone logo

Secure and online PDF solution

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CIB pdf standalone is a secure and online PDF editor that works locally and directly in the browser. It offers various PDF tools like Compress PDF, Image to PDF, PDF to image, Extract the images from your PDF, Insert page numbers.

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Macro logo

One-stop shop for knowledge work & collaboration

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Macro's AI-enhanced PDF block lets you chat with any file, explain terms in seconds, and collaborate with others seamlessly.

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PDFix SDK logo

Cross-platform solution for PDF & data extraction processes

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PDFix SDK is a high-performance C++ library that helps software developers and end-users integrate PDF functionality into their workflows. Available on Mac OS X, Windows, and Linux platforms, apps in the language of your choice.

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PDFBear logo

All-in-one PDF service with over 27+ features

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Online SaaS business as in all-in-one PDF service. Do everything from merge, compress, split, convert, eSign documents and store your files for an unlimited amount of time on our cloud.

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PdfFixNow logo
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Online PDF editor and converter for documents

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PdfFixNow is an online PDF editor and converter that allows users to manage documents without software installation. The platform offers tools to merge, split, compress, and edit PDF files, as well as convert between multiple file formats including Word, Excel, PowerPoint, and various image types. It operates as a web-based solution designed for document editing, conversion, and optimization tasks.

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pdfzus logo
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Secure local tool for merging PDF documents

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pdfzus is a browser-based PDF merging tool that processes files locally using WebAssembly technology. The platform allows users to combine multiple PDF documents and image files through drag-and-drop functionality without requiring registration or file uploads to external servers. Files remain on the user's device throughout the merging process, with processing occurring entirely within the browser to maintain data privacy and GDPR compliance.

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Afirstsoft PDF logo
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Cloud-based and AI-enabled PDF software

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Afirstsoft PDF is a cloud-based and AI-enabled PDF editor that assists with document management. It allows users to edit, convert, annotate, OCR, encrypt, organize, and summarize PDFs.

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Conversion Service logo
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On-premise solution for high-volume PDF processing

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Conversion Service is a flexible, on-premises solution for high-volume PDF processing and automated workflows.

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PDF Architect logo
(0)

The affordable and flexible PDF editor.

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PDF Architect is a powerful PDF editing tool for businesses and professionals. It offers advanced features like editing, form creation, PDF conversion, document security, and cloud integration. With OCR, batch processing, and collaboration tools, it streamlines workflows and enhances productivity.

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