Combine Multiple Files

Merge PDF Files

Combine PDFs in the exact order you want with the easiest PDF merger available. 100% Free.

Select PDF files

Drop files here or click • Max 100MB Total

Drag & Drop Reorder
Secure Processing
No Watermark

How to merge PDF files online

Combining multiple PDF documents into one single file is easier than ever. Follow these simple steps to join your PDFs instantly.

1

Upload your files

Click on "Choose Files" or drag and drop the PDF documents you want to merge directly into the box above.

2

Reorder and arrange

Hover over any file and drag it to change the order. You can also rotate pages or remove files you don't need.

3

Merge and download

Click the "Merge PDF" button. Our system will process your pages in seconds. Click download to get your new combined file.


Secure PDF Merging

Your privacy is our priority. All files uploaded to PDF AI are encrypted using 256-bit SSL technology. Your documents are completely secure during transfer and are permanently deleted from our servers within 60 minutes after processing.

Fast and Easy

No need to install heavy software or pay for premium subscriptions. Our online PDF combiner works directly in your web browser. Whether you are using Windows, Mac, iOS, or Android, you can join your PDFs in just a few clicks.

Maintain Original Quality

Merging your files shouldn't mean losing quality. Our tool ensures that the resolution of your text, images, and formatting remains exactly the same as the original documents. The only difference is that they are now neatly organized into one file.

Perfect for Professionals

Whether you need to combine invoices for accounting, join multiple scanned documents, or merge portfolio pieces into a single presentation, our free tool is built to handle professional workflows without adding any watermarks.

Need a Detailed Guide?

Want to master PDF merging with step-by-step instructions, screenshots, and pro tips? Check out our complete tutorial.

Read: How to Merge PDF Files

Frequently Asked Questions

Absolutely. We use 256-bit SSL encryption. All files are permanently deleted within 60 minutes.

You can merge up to 40 PDF files at once. The total size limit is 100MB per session.

Yes! Simply drag and drop the files to rearrange their order. The top-most file will be the first pages in your merged PDF.

No, we never add watermarks to your documents. The service is 100% free and leaves your files clean.