Type DRAFT, CONFIDENTIAL, or anything else — it is stamped across every page on your device, no upload involved.
Type DRAFT, CONFIDENTIAL, or anything else — it is stamped across every page on your device, no upload involved.
Stamp a text watermark across every page of a PDF — CONFIDENTIAL, DRAFT, DO NOT COPY, or anything you type — without uploading the document anywhere. The watermark is written into the PDF's page content in your browser, so it survives printing, forwarding, and re-saving. Ironically, most online watermark tools make you upload the very document you're trying to mark confidential; GhostPDF never does, because the whole operation runs on your device.
Drop your PDF
Drag a PDF onto the page. It opens in the GhostPDF studio with Watermark pre-selected.
Type your watermark
Enter the text — DRAFT, CONFIDENTIAL, a client name — and it's stamped diagonally across every page, rendered locally.
Download the marked PDF
The watermark is part of the page content now — it shows everywhere the PDF goes, including prints.
Do you upload my document?
No — which matters more here than anywhere. The whole point of a CONFIDENTIAL stamp is that the file is sensitive; it's watermarked in your browser and never sent.
Can the watermark be removed?
It's embedded in the page content, so it can't be toggled off in a viewer. Like any watermark, a determined editor can attack it — treat it as a strong label, not encryption.
Does it go on every page?
Yes, every page gets the stamp, so a single extracted page still carries the marking.
Can I use it together with password protection?
Yes — watermark first, then run Protect in the same studio to encrypt the marked file. Both steps happen locally in the same tab.
Will it slow down or bloat the PDF?
No — the watermark adds a few kilobytes of text drawing instructions, nothing more.
Every GhostPDF tool runs entirely in your browser. Your file is never uploaded — there's no upload endpoint to send it to.