Free PDF Merger Online
Merge multiple PDF files into a single document with our free online PDF Merger. Combine contracts, reports, invoices, or any PDF files into one unified document in seconds. Simply drag and drop your PDFs, rearrange them in your desired order using our intuitive interface, and click merge. The tool processes everything in your browser using pdf-lib — your documents are never uploaded to any server. Support for up to 20 files at once, with no file size limits and no watermarks. Perfect for combining related documents, creating comprehensive reports, or organizing scattered PDF pages into a single file.
How to Use PDF Merger
Upload PDF Files
Drag and drop 2 or more PDF files into the upload area. You can add up to 20 files at once.
Arrange File Order
Reorder your PDF files using the up/down arrows. The files will be merged in the order shown.
Merge & Download
Click "Merge PDFs" to combine all files into one document. Download the merged PDF instantly.
Features
Drag & Reorder
Easily rearrange the order of PDF files before merging using intuitive up/down controls.
Up to 20 Files
Merge up to 20 PDF files at once. No restrictions on individual file sizes.
Client-Side Processing
All merging happens in your browser. Files are never uploaded — 100% private and secure.
Instant Results
Fast merging powered by pdf-lib. Even large multi-page documents are combined in seconds.
Benefits of Using PDF Merger
Completely Free
Use PDF Merger without any cost, limits, or hidden fees. No premium plans needed.
No Installation
Works directly in your browser. No software downloads or plugins required.
100% Private
Your files and data are processed locally. Nothing is uploaded to external servers.
Works Everywhere
Compatible with Chrome, Firefox, Safari, Edge on desktop, tablet, and mobile.
No Sign-Up
Start using the tool immediately. No account creation or email verification.
Always Available
Access this tool 24/7 from anywhere in the world, on any device.
Frequently Asked Questions
Complete Your PDF Tools Workflow
These free tools work seamlessly with PDF Merger to handle every step of your workflow.