“Sign your work — it is the mark of care.”
Watermark Online
Stamp a translucent diagonal text watermark — DRAFT, CONFIDENTIAL, your company name — across every page, sized automatically to span the page.
- No sign-up, no watermark
- Files encrypted and auto-deleted
- No installation — runs right in your browser
- Fast processing on desktop and mobile
How to use Watermark online
- 1
Upload your files
Drag and drop or click to select your file(s). Uploads go directly to encrypted cloud storage over HTTPS. (PDF)
- 2
Run the tool: Watermark
Processing happens instantly in the cloud — no software to install, works on Windows, Mac, Linux, iOS and Android.
- 3
Download the result
Get your processed file via a secure temporary link. All files are deleted automatically about a day after upload.
Frequently asked questions
What does the watermark look like?
Bold Helvetica set diagonally across the page at 18% opacity, auto-sized between 24 and 96 points so the text roughly spans the page diagonal. Short words come out large and prominent; longer phrases scale down to fit.
Can the recipient remove it?
Not casually — it's drawn into the page content rather than added as an annotation a viewer can toggle off. Someone determined and technical could still strip it, so treat a watermark as a deterrent and a provenance marker, not as security. Use Protect PDF or Redact PDF when the requirement is actually confidentiality.
Can I watermark only some pages, or use an image?
No — the text watermark is applied to every page. For per-page placement, an image or logo watermark, or precise positioning, use Edit PDF, which has a dedicated watermark and stamp tool alongside free placement.
Will it obscure my text?
At 18% opacity the underlying text stays comfortably readable — the watermark reads as a background tint rather than a block. Very dense pages will look busier, so check one page before running a long document.
Can I change the watermark's size, angle or colour?
The text is yours; the styling is not. It is drawn diagonally at 45 degrees, in light grey at low opacity, and sized automatically to span the page — short words appear larger, long phrases smaller. That keeps it legible as a mark without obscuring the document underneath.