How it works
PDF Watermark — Add a text or image watermark to every page of a PDF. All processing happens in your browser — no upload, no signup, no email required. Free forever.
Frequently asked questions
Is the watermark visible behind text and images?
Yes — we draw it as a vector overlay on each page. Adjust opacity to make it subtle (default 30%) or assertive (80%+). Tile mode covers the whole page in a repeating diagonal pattern.
Does the source PDF stay intact?
Yes. We load the file into memory, add the watermark via pdf-lib, and offer a fresh PDF for download. The original on disk is never modified.
Can I watermark a specific page only?
Currently every page gets the same watermark. Per-page selection is on the roadmap; for now you can split the PDF, watermark one part, and re-merge.