How do I combine multiple PDF files into one?

Download Univik PDF Combiner, drag and drop your PDF files into the application, arrange them in desired order, then click Combine. The merged PDF is saved to your chosen location.

Is PDF Combiner free to use?

Yes, the free trial allows combining up to 3 PDF files. The full version ($29) removes all limits and allows unlimited PDF merging.

Can I rearrange pages before combining?

Yes. You can reorder entire PDF files using drag-and-drop, and the page preview shows you exactly how the final document will look before merging.

PDF Combiner - Merge Multiple PDF files into One

Combine PDFs From Any Source

Scanned PDFs

Word to PDF

Business Reports

Email Attachments

PDF Forms

Invoices

Contracts

Presentations

Key Features

Why Choose Univik PDF Combiner

A simple yet powerful PDF merging tool designed for professionals who need reliable results without complexity or privacy concerns.

Unlimited PDF Merging

Combine any number of PDF files into a single document. No restrictions on file count, page numbers or file size. Process hundreds of PDFs in a single operation with consistent performance.

Drag-and-Drop Interface

Simply drag PDF files from Windows Explorer into the application window. Rearrange files by dragging them up or down in the list. No complicated menus - just drop files and click combine.

Page Preview

View thumbnail previews of all pages in your PDFs before combining. Click any file in the list to see its pages displayed on the right panel. Verify content and order before creating the final merged document.

Preserve Original Quality

Combined PDF maintains full quality of source files. Text remains searchable, images stay sharp, vector graphics preserved. No compression or quality loss during the merge process.

Bookmark Preservation

Existing bookmarks, table of contents and document outlines from source PDFs are preserved in the combined file. Navigate large merged documents easily using the original bookmark structure.

Password-Protected PDFs

Combine password-protected PDF files by entering the password when prompted. The software handles both user and owner password protected documents. Set a password on the output file for added security.

Batch Folder Processing

Add entire folders of PDF files at once using the "Add Folder" button. All PDFs in the selected directory are automatically loaded and ready to combine. Process project archives, monthly reports or document collections efficiently.

100% Offline Operation

Desktop software that works completely without internet. Your PDFs are never uploaded to any server - all processing happens locally on your computer. Essential for confidential documents, contracts and sensitive business files.

Simple Steps

How to Combine PDF Files

Merge your PDF documents in under a minute with these four simple steps.

Step 1: Add PDF Files

Drag and drop PDFs or click "Add Files" to select documents.

Step 2: Arrange Order

Drag files to reorder or use Up/Down buttons.

Step 3: Preview Pages

Click any PDF to preview its pages before combining.

Step 4: Combine

Click Combine and save your merged PDF document.

Quick Start Guide

Download & Install: Download Univik PDF Combiner and install on Windows. Takes less than a minute.
Add PDF Files: Drag files directly into the window or click "Add Files" / "Add Folder" buttons.
Arrange Order: Drag files up/down in the list to set merge order. First file becomes first pages.
Preview (Optional): Click any file to see page thumbnails in the preview panel.
Set Output: Choose save location and filename for combined PDF.
Click Combine: Click the Combine button. Progress bar shows status until complete.

Use Cases

Who Uses PDF Combiner

Professionals across industries rely on PDF Combiner to streamline document management and create unified files.

Business Professionals

Combine monthly reports, financial statements and project documents into single files for stakeholder distribution. Merge contract pages and supporting documents for complete agreement packages.

Legal & Compliance

Merge case documents, evidence files and legal briefs into organized case files. Combine compliance reports and audit documents for regulatory submissions.

Finance & Accounting

Consolidate invoices, receipts and expense reports for monthly accounting. Merge tax documents and supporting paperwork for year-end filing.

Education & Research

Combine research papers, citations and appendices into complete thesis documents. Merge course materials, syllabi and handouts for student distribution.

Real Estate

Merge property listings, inspection reports and disclosure documents into complete property packages. Combine closing documents for transaction records.

Personal Use

Combine scanned documents for insurance claims. Merge travel itineraries, booking confirmations and tickets. Organize family records and important documents.

Technical Details

System Requirements & Specifications

System Requirements

Operating System	Windows 11, 10, 8.1, 7 (32/64-bit)
Processor	1 GHz or faster
RAM	512 MB minimum, 2 GB recommended
Disk Space	50 MB for installation
.NET Framework	4.8 or higher (included)
Display	1024 x 768 minimum resolution

PDF Support

PDF Versions	PDF 1.0 through PDF 2.0
Max File Size	No limit (tested up to 2 GB)
Max Files	Unlimited
Encryption	40-bit, 128-bit, 256-bit AES
Preservation	Bookmarks, links, metadata
Output	PDF/A compliant option

Version Information

Current Version: 6.3

File Size: 12.8 MB

License: Per-user, lifetime

Common Questions

Frequently Asked Questions

Download and install Univik PDF Combiner on your Windows computer. Launch the application and drag your PDF files into the window (or use Add Files button). Arrange the files in your desired order by dragging them up/down in the list. Click the Combine button and choose where to save the merged PDF. The combined file is created in seconds.

The free trial version allows you to combine up to 3 PDF files to test all features. For unlimited PDF merging, the full license costs $29 (one-time payment, lifetime license). This includes free updates and email support. Volume discounts are available for teams.

Yes. Univik PDF Combiner is 100% desktop software that works completely offline. Your PDF files never leave your computer - all processing happens locally. This is essential for confidential documents, legal files, medical records or any sensitive information that should not be uploaded to cloud services.

You can reorder entire PDF files by dragging them up or down in the file list. The page preview panel shows thumbnails of all pages so you can verify the final order before combining. For page-level reordering within a single PDF, use our PDF Editor tool.

No. Univik PDF Combiner merges files without any recompression or quality loss. Text remains fully searchable, images maintain their original resolution, vector graphics stay crisp and fonts are preserved exactly. The combined PDF is identical in quality to the source files.

Yes. When you add a password-protected PDF, the software prompts you to enter the password. Once authenticated, the file is added to your combine list. You can also set a password on the output file to protect the combined document. Both user passwords and owner passwords are supported.

The full version has no limits on file size, number of files or total pages. We have tested combining hundreds of PDFs and files up to 2 GB each. Performance depends on your computer's RAM - for very large jobs (1000+ files), we recommend 8 GB RAM for optimal speed.

Yes. Existing bookmarks from each source PDF are preserved in the combined document. The software can also create new top-level bookmarks using each source filename, making it easy to navigate to specific sections in the merged file. Internal links within PDFs continue to work correctly.

PDF Combiner supports Windows 11, Windows 10, Windows 8.1 and Windows 7 (both 32-bit and 64-bit editions). The software requires .NET Framework 4.7.2 or higher, which is included in Windows 10/11 and installed automatically on older systems during setup.

Unlike online PDF mergers, Univik PDF Combiner runs entirely on your computer. Your files are never uploaded to any server, ensuring complete privacy. There are no file size limits, no waiting for uploads/downloads, no subscription fees and no dependency on internet connection. It is faster and more secure than browser-based alternatives.

Comparison

Desktop vs Online PDF Tools

Feature	Univik PDF Combiner	Online PDF Tools
Privacy	✓ 100% offline - files never uploaded	✗ Files uploaded to third-party servers
File Size Limit	✓ No limit (tested up to 2 GB)	✗ Usually 50-100 MB per file
Number of Files	✓ Unlimited files	✗ Often limited to 10-20 files
Speed	✓ Instant - no upload/download wait	✗ Depends on internet speed
Works Offline	✓ Yes - no internet required	✗ No - requires internet connection
Subscription	✓ One-time purchase ($29)	✗ Monthly/yearly subscription
Page Preview	✓ Full page thumbnails	~ Limited or no preview
Password PDFs	✓ Full support	~ Often unsupported

Ready to Combine Your PDFs?

Download free trial and merge up to 3 PDFs. No registration required.

Download Free Trial Buy Full Version - $29

Windows 11, 10, 8.1, 7 | 12.8 MB | No signup required

About Univik

Univik has been developing file conversion and digital utility software since 2013. Our tools are used by professionals in legal, finance, education and government sectors worldwide. We focus on creating reliable, privacy-respecting desktop software that works without internet dependency.

PDF Combiner is part of our document tools suite that includes PDF Converter, PDF Viewer and PDF Editor. All our software is verified malware-free by VirusTotal and digitally signed.

Certified clean by 70+ antivirus engines

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