PDF Watermark & Page Numbers (Free, No Upload)

Add a text watermark such as "DRAFT" or "CONFIDENTIAL", plus page numbers, to every page of a PDF for free. Everything runs in your browser, so your file is never uploaded to a server.

What is PDF watermarking?

This tool lets you stamp a text watermark such as "DRAFT," "CONFIDENTIAL," or "SAMPLE" across every page of a PDF, and/or insert page numbers in a "1 / 10" style format. You can freely adjust the watermark's text, font size, opacity, rotation angle, and color, and choose the page number's position (any corner or edge) and starting number. You can add both at once, or just one of them.

Everything runs inside your browser using a library called pdf-lib — your PDF is never sent to a server. That makes it safe to use on documents you would rather not upload, such as a draft contract, a confidential proposal, or a quote you have not finalized yet. Note that the watermark text only supports half-width letters, numbers, and symbols; Japanese, Chinese, and Korean characters cannot be rendered.

How to add a watermark and page numbers to a PDF

Set up your text watermark Turn on "Add a text watermark" and type your text, or pick one of the preset buttons like CONFIDENTIAL or DRAFT. You can also adjust the font size, opacity, rotation, and color.
Set up page numbers If you need them, turn on "Add page numbers" and choose the format ("1" or "1 / 10"), starting number, and position. This can be combined with the watermark.
Choose your PDF Drag and drop a file into the box, or click to select one. Processing starts immediately using the settings above.
Download the result Once processing finishes, a "Download" button appears. The file is saved with "-watermarked" added to the original filename.

Tips for getting more out of it

The watermark text only supports half-width letters, numbers, and symbols. Non-Latin scripts such as Japanese, Chinese, or Korean cannot be rendered by the built-in font.
Keeping opacity around 20–40% lets the watermark show through without making the underlying text hard to read — this matters most for documents like contracts that people still need to read carefully.
A rotation around 45 degrees gives the classic diagonal "DRAFT" stamp look that runs across the whole page. Set it to 0 for a plain horizontal band instead.
You can add a watermark and page numbers at the same time. Stamping "CONFIDENTIAL" alongside page numbers on materials you distribute makes it easy to reference a specific page later.
If you also need to reorder or remove pages first, use the PDF page organizer before adding your watermark here.

When to use PDF watermarks and page numbers

Marking a contract or proposal as a draft

A visible "DRAFT" watermark makes it obvious the document is still under review, preventing it from being mistaken for the final version.

Sharing confidential material internally

Stamping "CONFIDENTIAL" on meeting materials or internal proposals reminds readers to handle the document with care.

Publishing a sample or preview

A "SAMPLE" watermark on a portfolio piece or a preview of paid content makes the distinction from the final version clear.

Numbering a long report or handout

Adding "1 / 10"-style page numbers to a long report or handout makes it much easier to check page order after printing or to reference a specific page during a discussion.

PDF watermarking terms

Watermark: A semi-transparent text or image overlaid on a document. The term originally referred to the faint pattern visible when paper is held up to light; here it refers to text layered onto a digital document.
Opacity: A value from 0–100% describing how solid the watermark looks. Lower values let the underlying content show through more clearly; higher values make the watermark itself more prominent.
WinAnsi encoding: The character set supported by PDF built-in fonts such as Helvetica. It covers half-width letters, numbers, symbols, and accented Western European characters, but not Japanese, Chinese, or Korean — which is why this tool only accepts those characters for the watermark text.
Page folio: A publishing term for a printed page number. This tool's page number feature mechanically stamps a folio onto every page of an existing PDF.
DRAFT / CONFIDENTIAL stamps: Standard watermark phrases commonly used on contracts and internal documents. "DRAFT" signals a version still under review, and "CONFIDENTIAL" signals restricted internal information — both are internationally understood conventions in business documents.

Frequently asked questions

Not currently. PDF built-in fonts cannot render those character sets. If you want to convey something like "confidential" in another language, using an internationally recognized English word such as "CONFIDENTIAL" is a reliable alternative.

It is never uploaded in the first place. Reading the PDF and adding the watermark or page numbers all happen inside your browser. The file contents never travel over the network, so it is safe to use with confidential documents.

Yes. Each can be turned on or off independently, so you can add just the watermark, just page numbers, or both together.

No — a PDF that requires a password to open cannot be loaded. Please remove the password first.

This tool only adds watermarks; it has no feature to detect or remove existing ones. That is a deliberate choice, since removing a rights notice added by a third party could enable misuse.

Side Note — Watermarks are a centuries-old idea

Watermarks are believed to date back to 13th-century Italy. Papermakers in Fabriano, in what is now Italy's Marche region, wove wire patterns into the mesh frames used to form sheets of paper, leaving a faint pattern that only became visible when the paper was held up to light. It served as a brand mark identifying the workshop that made the paper, and also as an anti-counterfeiting device that was difficult to replicate.

The technique spread across papermaking centers in Europe and was later adopted to help prevent forgery of banknotes and official documents. Many of today's currencies still carry watermarks, continuing a tradition centuries in the making. The core idea — proving authenticity without altering the document's original appearance — has remained essentially unchanged since the age of paper.

In the digital world, the watermark became a semi-transparent piece of text or an image layered on top of a page. Placing standard phrases like "DRAFT," "CONFIDENTIAL," or "SAMPLE" at a 45-degree diagonal is often said to echo the faint, page-spanning pattern that appears when paper is held to the light. The fact that these phrases are internationally understood shorthand in business documents also mirrors how paper watermarks were designed to be read the same way by anyone who saw them.

That said, a digital watermark is purely a visual notice — unlike encryption, it does not technically prevent copying. It cannot stop a screenshot or a printout. What it does provide is a quick, unmistakable signal about how a document should be treated, and that alone carries just as much practical value today as it did on paper centuries ago.

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