Free Watermark PDF tool
Stamp CONFIDENTIAL, DRAFT or your own logo across the pages of a PDF. Set the size, colour, angle and opacity, place it once in the centre or tile it across the page, and download the result. It runs entirely in your browser, so your PDF is never uploaded.
Drag and drop your PDF here
One file at a time. It is never uploaded.
The watermark is drawn into a fresh copy of the file, so your original PDF is untouched. A visual watermark deters casual reuse, but it is not tamper-proof security.
Handy for contracts, proposals, invoices and drafts. Your original file is never changed, the watermark goes into a fresh copy.
PDF to watermarked copy in four steps.
Drop the file, set the watermark, pick the pages and download. Nothing leaves your device at any point.
Add your PDF
Drop a PDF onto the tool or pick one from your device. You see the file name, the page count and the size straight away, and the file never leaves your browser.
Pick text or image
Type a watermark like CONFIDENTIAL or DRAFT, or upload a PNG or JPG logo. Set the size, colour, angle and opacity until it reads clearly without burying the page.
Choose the placement
Stamp one watermark in the centre of each page or repeat it as a tiled pattern. Apply it to every page or only to a page range you set.
Download the result
The watermark is drawn into a new copy of the PDF and downloaded as watermarked-yourfile.pdf. Your original file stays untouched on your device.
A clear mark on every page.
A document that leaves your hands should say what it is. A visible watermark makes the status of a file obvious on every copy, print and screenshot.
Text or logo, your call
Stamp a word like CONFIDENTIAL, DRAFT or PAID in the colour and angle you choose, or place your own PNG or JPG logo, scaled to the page width. Both respect the opacity you set.
Single or tiled
A single centred watermark keeps the page clean. The tiled pattern repeats the mark in a grid across the whole page, which is much harder to crop out of a screenshot.
Only the pages you pick
Watermark the whole document, or give a from and to range so a cover page or appendix stays clean. The page count is checked so a bad range is caught before anything runs.
Private by design
The PDF is read and rewritten with JavaScript in your own browser. Nothing is uploaded to a server, so contracts, invoices and drafts stay on your machine.
Documents that stamp themselves.
Watermarking one file by hand is fine. But when every quote, invoice or report your team sends out needs a watermark, a reference number and an archive copy, that belongs in your software, done automatically on every document. Building document pipelines like that into web apps, ERPs and billing systems is part of what we do at Techliphant.
Need page numbers too? Try the add page numbers tool.
Common questions.
It draws a faint text or image over every page, so anyone reading a copy can see at a glance that the document is a draft, confidential, a sample, or already paid. It marks the state and origin of the file, which matters once a PDF starts being forwarded around.
No. The file is opened and rewritten with JavaScript in your browser, and the watermarked copy is saved straight back to your device. Nothing you add is sent to us or stored, which is exactly what you want for contracts and financial documents.
Text is the everyday choice: CONFIDENTIAL, DRAFT, SAMPLE and similar stamps are instantly understood and stay razor sharp at any zoom because they are drawn as real vector text. Use an image when you want your logo on the pages, for branding or to mark proofs sent to a client.
By a determined person with the right tools, yes. A visual watermark deters casual reuse and makes the status of a document obvious, but it is not tamper-proof security. If you need to actually control access, combine it with password protection or share the file through a system that enforces permissions.
The tool draws the text with the standard Helvetica font that every PDF reader ships with, and that font only covers Latin letters, digits and common punctuation. Text in other scripts would need a full font file embedded in the PDF. If you need a mark in another script, render it as an image once and use the image watermark instead.
Single puts one watermark in the centre of each page, which is subtle and keeps the content readable. Tiled repeats the mark in a grid across the page, so it still shows in a cropped screenshot or a photographed page. Drafts usually take a single centre mark, while confidential material benefits from tiling.
Somewhere between 10 and 20 percent is the sweet spot for most documents: clearly visible, but the text underneath stays comfortable to read. Go lighter for dense reports, and a little stronger for image-heavy pages where a faint mark can disappear into photos.
The pages themselves are untouched, so text stays selectable and images keep their original quality. The watermark is added as an extra drawing instruction on each page, which usually grows the file by a small amount, and a logo image adds roughly its own file size once.
A PDF that needs a password to open is encrypted, and the tool cannot rewrite what it cannot read. Remove the password in your PDF reader first, watermark the file, and protect it again afterwards if you need to.
Yes. Switch the page range from all pages to a custom range and give the from and to page numbers. That is handy when the cover and the table of contents should stay clean, or when only one chapter is confidential.
Yes. A scanned PDF is just a document whose pages are images, and the watermark is drawn on top of each page either way. The mark will sit over the scan exactly as it does over regular text.
Yes. Stamping one file at a time is fine, but if your team generates quotes, invoices or reports that must go out watermarked, numbered and archived, that belongs in your software, not in a manual step. Building document pipelines like that into web apps, ERPs and billing systems is part of what we do at Techliphant.
Private by design: this tool runs entirely in your browser, so your PDF is never uploaded, sent anywhere or stored. The watermarked copy is written on your own device. It is provided free for everyday use.
Ready when you are
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