Select your PDFs
Choose two or more standard PDF documents. You can add several files in one selection.
Merge PDF Files
Combine PDFs in the exact order you need. Documents are processed on your device and never uploaded.
How to combine PDF files safely
This merger works locally in modern browsers, so contracts, statements, reports, and other documents do not need to be transferred to a file-processing server.
Set the order
Use the up and down buttons beside each filename. The first file becomes the beginning of the merged document.
Merge and download
The browser copies every page into a new PDF and saves it directly to your device without a watermark.
Private browser-based PDF merging
FreNiMi Tools reads the selected documents and creates the combined file in browser memory, using a PDF library that runs as JavaScript in the page. Nothing is sent to FreNiMi for processing, and no account is required — you can confirm this yourself by opening your browser's Network tab before merging: no PDF data appears in any outgoing request.
For the best result, confirm the file order before merging and open the downloaded document to check page orientation and completeness. Very large PDFs may be limited by the available memory on your device, since everything happens in the browser tab rather than on a server. For a closer look at how merge order works and why password-protected files need unlocking first, see the PDF merging guide.
Supported files and limitations
- Standard PDF documents with any page size.
- Multiple PDFs in one output, arranged with accessible order controls.
- Password-protected or encrypted PDFs are not supported.
Frequently asked questions
Are my PDFs uploaded or stored?
No. Your browser reads and combines the selected PDFs locally, then downloads the result directly to your device.
Can I change the order of the PDF files?
Yes. Use the up and down controls beside each file before merging.
Why does a password-protected PDF fail?
Encrypted and password-protected PDFs require credentials and are not supported by this browser-only tool.
Does the merged PDF have a watermark?
No. FreNiMi does not add a logo, footer, or watermark to the downloaded PDF.
Is there a limit to how many files I can merge?
There's no fixed file-count limit. Very large combined documents use more of your device's memory during processing, since everything runs in the browser tab rather than on a server.
I need to reorder pages within one PDF, not across files — can this tool do that?
Not this one. Merge combines separate files; reordering pages inside a single PDF is a different operation, available in the Rotate & Reorder PDF tool.