How to use Merge PDFs
- Open the tool. No account. The page loads the editor in your browser.
- Add files. Drop files onto the page. They are read locally and never uploaded.
- Merge. Reorder thumbnails, then merge. Pages keep their original quality.
- Download. The result is saved to your device. Nothing is stored on a server.
Frequently asked questions
Is there a limit on how many PDFs I can merge?
No artificial limit. Typical desktops handle 20–50 files depending on RAM.
Are files uploaded?
No. Merging runs in your browser. Watch the Network tab — there is no upload.
Does the merged PDF have a watermark?
Never. ProMaxPDF does not stamp output files.
Merge PDFs on ProMaxPDF (promaxpdf.pro) runs in this browser. Need a walkthrough? Read the free merge pdfs guide.