Merge PDF Files
Combine multiple PDF documents into a single file in seconds. Drag and drop, arrange the order, and merge. It's fast, free, and works entirely in your browser.
What Is PDF Merging?
PDF merging is the process of combining two or more PDF files into a single document. This is useful when you need to consolidate reports, combine scanned documents, or assemble chapters of a book into one file. PDF CodexNeo's merger works entirely in your browser using JavaScript, meaning your files never leave your device — ensuring complete privacy and security.
How to Merge PDF Files
Upload Files
Drag and drop or select the PDF files you want to combine.
Arrange Order
Reorder the files by dragging them into your preferred sequence.
Merge & Download
Click "Merge" and download your combined PDF file instantly.
Frequently Asked Questions
Yes, our PDF merger is completely free with no registration required. There are no hidden fees, watermarks, or usage limits.
Absolutely. All file processing happens directly in your browser using JavaScript. Your files never leave your device or get uploaded to any server.
You can merge up to 20 PDF files at once, with each file being up to 50 MB in size.
Yes, you can drag and drop files to rearrange them in any order before merging. The final PDF will follow your chosen sequence.
Our tool works in all modern browsers including Chrome, Firefox, Safari, Edge, and Brave. No plugins or extensions are needed.