How to Merge Multiple PDFs Into One File
Often you need to combine several PDF documents into one — for example, merge scans, contracts or reports. Here is how to do it in just a couple of clicks.
When Do You Need to Merge PDFs?
- Combine all document scans into one file for sending
- Merge book chapters or report sections into a single document
- Collect multiple invoices or receipts into one package
- Prepare a document package for submission
How to Merge PDF Online
- Open the PDF merge tool
- Drag all the PDF files you need into the upload zone
- Arrange files in the desired order
- Click the "Merge" button
- Download the resulting file
Tool Features
Our tool uses the pdf-lib library to merge files. All pages from source documents are copied into a new PDF while preserving formatting, fonts and images.
- Add any number of files
- Reorder files as needed
- Processing happens in the browser — files are never uploaded to a server
- No file size limits
What to Do After Merging?
After merging you can compress the result to reduce file size. Or add page numbers for easier navigation.