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PDF Watermark
Stamp text across pages to mark a draft or copy.
100% FreeBrowser-basedNo watermark
- 1UploadAdd your file from your device.
- 2Choose optionsPick the output settings you need.
- 3ProcessRun the tool in your browser.
Private by designProcessed on your device where possible.
Works on any deviceDesktop, tablet and mobile browsers.
No installationOpen the page and start working.
Always free coreUse the free plan for everyday tasks.
How to use PDF Watermark
Pick the output settings you need.
02Run the tool in your browser.
03Save the finished result.
04Your files stay private
Your work is processed locally in your browser where possible and is never added to a Vootkit upload library.
Learn more about privacyA document marked DRAFT that circulates without the mark is how an unapproved figure ends up quoted back at you in a meeting. A watermark is not security — it is a label, applied across every page so that no single printed sheet can be mistaken for final.
What PDF Watermark does
Draws your text diagonally across every page at an opacity you control, beneath nothing and above everything, so it reads on screen and on paper without making the underlying text unreadable.
Opacity is the whole craft here. Too faint and a photocopy loses it; too strong and the document becomes hard to actually read.
Controls
| Opacity | 5% to 60%, default 20% |
|---|---|
| Font size | 12 to 120 pt, default 48 |
| Placement | Diagonal, centred, every page |
| Text | Any short phrase you type |
| Rendering | Real text drawn into the page |
| Input | |
| Output | PDF with the mark applied to all pages |
| Privacy | Processed in your browser — never uploaded |
Detailed steps
- Add the PDF and type the text — DRAFT, CONFIDENTIAL, a client name, a date.
- Set opacity. 20% is legible on screen and survives photocopying.
- Set the font size so the phrase spans the page without running off it. Longer words need smaller type.
Worth knowing
Keep the phrase short. At 48 pt a diagonal watermark comfortably fits about eight to ten characters across an A4 page; "CONFIDENTIAL — DO NOT DISTRIBUTE" at that size runs off both edges. Either shorten the words or drop the size to around 24 pt.
Frequently Asked Questions
Can the watermark be removed?
Yes, by anyone with a proper PDF editor — it is drawn as an object in the page, not fused into it. Treat it as a label that prevents honest mistakes, never as protection against someone who wants it gone.
What opacity should I use?
20% is the sensible default and survives a photocopy. Drop to 10% if the document is text-dense and the mark is getting in the way; raise toward 40% if the file is going to be screenshotted, where faint marks disappear.
Can I watermark only some pages?
No — it applies to every page, which is usually what you want, since a partly-marked document is exactly the one that gets misread. To mark a subset, split the file, watermark that part, and merge back.
Will it cover my text?
It sits over the page at low opacity, so text stays readable underneath. If it feels heavy, reduce opacity before reducing size — a large faint mark reads better than a small dark one.
Is PDF Watermark free?
Yes. The Vootkit free plan includes 5 tool runs a day. Upgrade to Vootkit Pro for unlimited daily use, an ad-free workspace and saved workflows.
Are my files uploaded?
No. PDF Watermark runs entirely in your browser — your file is processed on your own device and never sent to a server. There is nothing for us to store or delete.
Do I need to install anything?
No. PDF Watermark works in any modern browser on desktop, tablet or phone. Open the page and start.
How often can I use it? Is there a daily limit?
On the free plan you get 5 tool runs a day. When you reach the limit you'll see a prompt to upgrade, and it resets the next day. Vootkit Pro removes the cap entirely for unlimited daily use.
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This tool processes everything locally in your browser. You can disconnect from the internet after the page loads and it will still work.