Is the PDF Watermarker free?

Yes — the PDF Watermarker is completely free, with no account, subscription, signup, or usage limits.

Is my data uploaded or stored?

No. The PDF Watermarker processes everything locally in your browser. Your input is never uploaded, saved, or shared with any server.

Does the PDF Watermarker work offline?

Yes. Once the page has finished loading, the PDF Watermarker works without an internet connection.

Which browsers does the PDF Watermarker work in?

The PDF Watermarker works in all modern browsers, including Chrome, Firefox, Safari, and Edge — no plugins or extensions needed.

Can I remove the watermark later?

The watermark is rendered as text drawn onto the PDF page using pdf-lib. It is embedded in the page content layer and cannot be removed without specialist PDF editing software. Keep a copy of the original un-watermarked file.

Does the watermark appear on every page?

Yes — the watermark is applied to every page in the PDF. There is currently no option to apply it to selected pages only.

PDF Watermarker

Add a custom text watermark to every page of a PDF document.

📄

Drop a PDF here or click to browse

PDF files only

Free browser-based tool · Runs 100% on your device · Last updated July 7, 2026

What is the PDF Watermarker?

The free PDF Watermark Tool stamps a custom text watermark onto every page of a PDF — entirely in your browser with no upload required. Drop your PDF and configure the watermark: enter any Watermark Text (default: CONFIDENTIAL), pick a Colour with the colour picker, set the Font Size (12–120pt) and Opacity (5–100%), choose a Position (Diagonal or Centre), and for diagonal mode adjust the Angle (−90° to +90°). A live preview shows exactly how the watermark will look before you apply it. Click Apply Watermark & Download.

→ Stamping CONFIDENTIAL or DRAFT on internal documents before sharing
→ Adding a company name or copyright notice to PDF reports
→ Marking client-facing documents with DO NOT DISTRIBUTE before sending
→ Applying a personalised ownership mark to PDF files for distribution control

How to Use the PDF Watermarker

1 Drop or select your PDF in the drop zone.
2 Enter your Watermark Text (e.g. CONFIDENTIAL, DRAFT, or your company name).
3 Click the Colour picker to choose the watermark colour.
4 Drag the Font Size slider to set the text size (12–120pt).
5 Drag the Opacity slider — lower values create a subtler, semi-transparent watermark.
6 Choose Position: Diagonal or Centre. For diagonal, set the Angle with the slider.
7 Check the live preview, then click Apply Watermark & Download.

Key Features

✍️
Custom watermark text

Type any text — CONFIDENTIAL, DRAFT, your company name, or any other label.
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Full colour control

Choose any colour for the watermark text using the built-in colour picker.
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Font size and opacity sliders

Adjust size (12–120pt) and transparency (5–100%) for subtle or prominent watermarks.
👁️
Live preview

A real-time preview shows how the watermark text will look before applying.
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Free, browser-based

Watermarking runs locally — your PDF never leaves your device.

Example Usage

Example Input

File: proposal.pdf · Text: "CONFIDENTIAL" · Colour: #ff0000 · Opacity: 25% · Position: Diagonal · Angle: 45°

Example Output

proposal-watermarked.pdf — every page stamped with a semi-transparent red diagonal watermark

Frequently Asked Questions about the PDF Watermarker

What is the PDF Watermarker?: The PDF Watermarker is a free online tool that lets you add a custom text watermark to every page of a PDF document. It runs entirely in your browser, so there is nothing to install and nothing is uploaded to a server.
Is the PDF Watermarker free?: Yes — the PDF Watermarker is completely free, with no account, subscription, signup, or usage limits.
Is my data uploaded or stored?: No. The PDF Watermarker processes everything locally in your browser. Your input is never uploaded, saved, or shared with any server.
Does the PDF Watermarker work offline?: Yes. Once the page has finished loading, the PDF Watermarker works without an internet connection.
Which browsers does the PDF Watermarker work in?: The PDF Watermarker works in all modern browsers, including Chrome, Firefox, Safari, and Edge — no plugins or extensions needed.
Can I remove the watermark later?: The watermark is rendered as text drawn onto the PDF page using pdf-lib. It is embedded in the page content layer and cannot be removed without specialist PDF editing software. Keep a copy of the original un-watermarked file.
Does the watermark appear on every page?: Yes — the watermark is applied to every page in the PDF. There is currently no option to apply it to selected pages only.