Guides/Merge PDFs
How to merge pdfs free — no upload, no watermark
Drag files into order and merge them locally with pdf-lib. No file-count cap, no watermark. This guide is for ProMaxPDF on promaxpdf.pro. The file never leaves your browser — students and businesses use the same local engine.
- 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.
FAQ
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.