Top 10 Free Tools to Merge Multiple PDFs into One

Complete comparison of the best free PDF merger tools in 2025

📅 Published: September 22, 2025

Handling multiple PDF files can quickly become messy. Whether you're combining reports, invoices, or lecture notes, having them in a single file makes organization and sharing much easier. Fortunately, there are many free tools that allow you to merge multiple PDFs into one without hassle. In this article, we'll review the top 10 free tools for merging PDFs in 2025, comparing their features, pros, and cons.

📋 Why Merge PDFs?

  • Organization: Keep related documents together in a single file.
  • Convenience: Easier to share and send one file instead of many.
  • Professionalism: Merged files look cleaner and more polished.
  • Printing: Printing one file saves time and ensures correct order.

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🏆 Top 10 Free PDF Merger Tools in 2025

1 PDFWord.xyz

PDFWord offers a free and secure PDF merging tool. Simply drag and drop your files, rearrange them in the desired order, and download the combined PDF within seconds. Files are automatically deleted after processing to ensure privacy.

2 Smallpdf

Smallpdf is one of the most popular PDF platforms, offering a clean interface and reliable merging. Free users may face daily usage limits, but the process is fast and simple.

3 ILovePDF

ILovePDF provides a straightforward PDF merger along with other editing tools. It also allows merging PDFs stored on Google Drive and Dropbox. The free version includes ads.

4 Sejda PDF

Sejda's PDF editor includes a powerful merge function that supports up to 200 pages or 50 MB per session in the free plan. It's ideal for moderate use.

5 PDF24 Tools

A lightweight and free PDF toolkit that runs directly in your browser. PDF24 supports unlimited merges without requiring installation.

6 Adobe Acrobat Online

Adobe's online platform allows free PDF merging with excellent accuracy. However, some advanced features require a paid subscription.

7 Soda PDF Online

Soda PDF offers a flexible online merger with drag-and-drop functionality. The free version has limitations but works well for basic tasks.

8 DocuPub (Neevia)

DocuPub is a less flashy but effective tool for combining PDFs. It allows detailed control over output settings, though the interface feels outdated.

9 PDF Merge (Chrome Extension)

For Chrome users, the PDF Merge extension makes it easy to combine files directly from the browser. It's lightweight but lacks advanced features.

10 PDFsam Basic

Unlike the others, PDFsam is desktop software, but it's free and open-source. It offers robust merging, splitting, and page rearrangement options.

📊 Comparison Table

Tool Platform Free Limits Best For
PDFWord.xyz Online No limits Everyday users needing fast, secure merging
Smallpdf Online 2 tasks/day free Occasional use
ILovePDF Online Ads in free version Cloud storage integration
Sejda PDF Online 200 pages/50 MB per task Medium workloads
PDF24 Tools Online Unlimited Frequent online merges
Adobe Acrobat Online Online Basic merge free Professional accuracy
Soda PDF Online Online Limited free features Simple document tasks
DocuPub Online Unlimited Advanced settings
PDF Merge Extension Chrome Extension Basic free use Browser-based merging
PDFsam Basic Desktop Unlimited Offline, advanced tasks

💡 Tips for Merging PDFs Successfully

  • Arrange files in the correct order before merging.
  • Compress large PDFs to speed up the process.
  • Use a secure platform that deletes files after merging.
  • Double-check the final PDF to ensure all pages are included.

Conclusion

Merging PDFs doesn't have to be complicated. With these top 10 free tools, you can combine multiple files into a single, professional-looking document in minutes. For most users, PDFWord offers the perfect balance of speed, simplicity, and security. Try it today and simplify your document management.

For more tutorials and guides, explore our PDFWord Blog.

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