Merge PDF
Combine PDF files into one document without sending the files to this website. Processing happens in this browser tab.
Supported: PDF
Limit: Up to 20 PDF files, 50 MB per file and 150 MB total. No account, payment, or watermark.
Processing: In this browser tab
Choose files
Accepted: PDF. Up to 20 PDF files, 50 MB per file and 150 MB total. No account, payment, or watermark.
How to merge pdf
- Choose two or more PDF files in the order they should appear.
- Review the selected filenames and start the merge.
- Download the combined PDF and check its page order.
Common uses
- Combine certificates for an application
- Join invoices into one monthly file
- Prepare a single admission document packet
Output quality and limitations
Pages are copied into a new PDF without intentional image recompression. Always inspect the result before deleting the original.
Troubleshooting
Encrypted, corrupted, or unusually complex PDFs may not open. Unlock an authorised copy in trusted software and try again.
Related tools
Frequently asked questions
Are files uploaded to SmallPDF Tool?
No. The processing code for this tool reads the selected files in this browser tab.
Is an account required?
No account is required.
Is there a watermark?
No watermark is added by this tool.