Merge PDF files
Combine multiple PDF files into a single document in seconds. All pages are merged directly in your browser – no file is uploaded and no server ever touches your data.
Drop PDF files here
PDF files · up to 50 files · 100% on your device
How it works
- 1
Select your PDF files
Drag two or more PDF files into the box above or pick them using the button.
- 2
Set the order
Arrange the files in the order you want via drag & drop.
- 3
Merge & download
Click "Merge PDFs" and download the finished document immediately.
Your benefits
No upload – guaranteed
Merging happens entirely in your browser. Our Content Security Policy technically blocks any data transfer to servers – you can verify this yourself in your browser's network tab.
GDPR-compliant by design
Because no file ever leaves your device, no third-party data processing takes place. You don't need a data processing agreement and won't breach internal compliance policies – ideal for contracts, HR records and financial documents.
Free & without limits
No sign-up, no watermarks, no file limits. Even large PDFs are processed quickly because there is no upload.
Frequently asked questions
Are my PDF files uploaded to a server?
No. Merging is performed entirely locally in your browser using JavaScript and WebAssembly technology. Your files never leave your device at any point.
Is merging PDFs here really free?
Yes, the tool is completely free – no sign-up, no watermarks and no hidden limits.
How many PDF files can I merge at once?
You can merge up to 50 PDF files in a single run. You set the order beforehand via drag & drop.
Is this tool suitable for confidential company documents?
Yes. Since all processing takes place exclusively on your device, the tool is suitable for sensitive documents such as contracts, personnel files or financial reports. No third party processes your data.
Does merging also work offline?
After the page has loaded once, processing works without an active internet connection, because all computation runs locally in your browser.
Is the quality of the PDF pages preserved?
Yes. Pages are transferred into the new document unchanged – with no re-compression and no loss of quality.