Tutorial

How to Merge PDF Files — The Complete Guide

📅 January 16, 2025⏱️ 5 min read✍️ Nexus AI Tools Team

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Need to combine multiple PDF files into one? Whether it's combining chapters, invoices, or reports — merging PDFs is one of the most common document tasks. Here's everything you need to know.

Why Merge PDFs?

Send one file instead of many attachments
Combine chapters of a book or report
Merge bank statements for accounting
Combine job application documents into one PDF

The Easiest Way — Nexus Merge PDF (Free)

Go to Nexus Merge PDF. Drop your files in, drag to reorder if needed, click Merge. Done in 10 seconds. No size limits, no watermarks, completely free.

💡 Pro Tip: You can add files from different folders — just click 'Add Files' multiple times. Drag the files to reorder them before merging.

How to Merge PDFs on Windows

Windows doesn't have built-in PDF merging. Your options are: Use Nexus Merge PDF in your browser (recommended), or install PDF24 (free desktop app).

How to Merge PDFs on Mac

Mac has a built-in trick: Open both PDFs in Preview → View → Thumbnails → Drag pages between documents → Save. Or use Nexus Merge PDF online for faster results.

How to Merge PDFs on iPhone / Android

Open Nexus Merge PDF in your mobile browser — it works perfectly on phones. No app download needed.

Need to Merge 100+ PDFs at Once?

iLovePDF Pro supports batch merging of unlimited files with no size restrictions. Perfect for businesses.

Try iLovePDF Pro →

Tips for Better Merged PDFs

Add page numbers after merging using a PDF editor
Add bookmarks for each original document for easy navigation
Compress after merging if the file gets too large
Check page orientation — rotate any sideways pages before merging

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Nexus AI Tools Team

Building free tools for everyone.