Add PDF files
Choose two or more valid PDF documents from your device.
Merge PDF
Combine multiple PDF files in the exact order you choose without uploading them to a server.
Your files are processed in your browser and are not uploaded to our servers.
01
How it works
Arrange the order
Drag files into the order in which their pages should appear.
Merge and download
Every page is copied into one PDF while preserving its original dimensions.
02
Why use OneTools
Order control
Reorder or remove individual source files before merging.
Preserved pages
All pages and their original page dimensions are copied.
Browser processing
The merge operation runs locally in your browser.
03
Popular use cases
- Combine reports into one document
- Join scanned PDF sections
- Assemble application documents
- Merge invoices by date
04
Frequently asked questions
Are my PDFs uploaded?
No. This tool processes supported PDFs locally in your browser.
Does merging change page sizes?
No. Copied pages retain their original PDF dimensions.
Can I reorder files?
Yes. Drag files in the list before merging.
05
Related tools
Split PDFExtract selected pages into one document or separate every page into individual PDF files.Extract PDF PagesChoose exactly which PDF pages to save in a new document while preserving their original order.Delete PDF PagesSelect unwanted pages visually and create a new PDF containing everything else.Reorder PDF PagesDrag page previews into the order you want and save a rearranged PDF without uploading it.