Is the merged PDF really watermark-free?

Yes — free output is identical to Pro output except for task-size limits (3 files per merge on free).

Unlimited files per merge, PDFs over 20 pages, and 100-image PDFs — $9 one-time.

Merge PDFs Without a Watermark

Most 'free' PDF sites stamp a watermark or meter you to two tasks a day, because uploads cost them server money. PDFBox runs in your browser, so free is actually free.

▶ Merge PDF without watermark — free, no upload

Why we can skip the watermark

Your machine does the work — we pay for no upload servers
No watermark on free, ever; Pro only lifts count limits
No account, no daily meter, no 'premium trial'

How to do it

Open PDFBox — the right tab is already selected
Add 2-3 PDFs (free tier)
Reorder if needed
Click the action button and download the result. Done.

Privacy

Your files never upload — everything runs in your browser (pdf-lib + WebAssembly-free JS)
Nothing is stored; close the tab and it's gone
Safe for contracts, invoices and anything confidential

Merge PDF without watermark — free, no upload →