How to Merge Multiple PDFs into One — Free & Easy Guide
Need to send invoices together, combine scanned documents into a single file, or consolidate presentation materials? Merging PDFs is a common need in both business and everyday life.
In this guide, we'll show you how to merge PDFs right in your browser — no software installation required — along with helpful tips to know.
Merge PDFs in 3 Steps
With PDFrog's PDF Merge Tool, it's done in just 3 steps.
- Drag & drop the PDF files you want to merge
- Rearrange the file order by dragging
- Click the "Merge" button and download your combined PDF
All files are processed entirely in your browser — nothing is uploaded to any server. You can safely merge confidential documents.
Tips to Know Before Merging
Check the File Order
Pages in the merged PDF will appear in the order you specify. You can easily rearrange files with drag & drop, so make sure to verify the order before merging.
Unlock Password-Protected PDFs First
If any of the PDFs are password-protected, you'll need to remove the password beforehand. Use PDFrog's PDF Unlock Tool to quickly remove protection by entering the password.
Watch the File Size
Merging many PDFs can result in a large file. After merging, we recommend using the PDF Compress Tool to optimize the file size.
Common Use Cases for Merging PDFs
- Combine multiple invoices or receipts into one file for accounting
- Merge multiple scanned pages into a single PDF
- Assemble a cover page, table of contents, and body into one document
- Consolidate multiple reports or presentations for distribution
Summary
Merging PDFs takes just seconds with the right tool. With PDFrog, you can combine PDFs for free — no installation needed, entirely in your browser, and completely secure.