Merge PDF Online
Combine multiple PDF files into one document—reorder freely, no account required.
Processed on your device
Files and payloads for this tool are not uploaded to Utilxen. How we verify this
Select PDFs to merge
At least two PDFs. Up to 30 files, 83.9 MB each on this device. Order below is the merge order.
Local browser processing path · encrypted files rejected · output verified before download
How merging works
Each PDF is inspected for page count, then pages are copied into a new document in list order inside a Web Worker. The result is re-opened to confirm it is a valid PDF before download is offered.
FAQ
Is the merge order guaranteed?
Yes. The output follows the visible list order exactly. Use Move up/down to reorder before merging.
Are files uploaded?
This path merges PDFs in a Web Worker on your device. The “Processed on your device” badge reflects recorded network-egress verification for this tool.
What about password-protected PDFs?
Encrypted PDFs are rejected with a clear error. Unlock support is planned as a separate tool.