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Watermark PDF

Add a text or image mark to every page. Add confidential, draft, copyright, or brand watermarks with control over position, opacity, color, size, and rotation.

Never uploaded Style before export No signup

01 / Add a file

Choose the PDF to watermark

The original stays untouched while a new copy is created.

Single file · Max 256 MB

Core processing stays in this browser after the page loads. Large files use device memory and may run slower.

Watermark PDFs / make ownership visible

Add a clear document mark while keeping the original safely on your device.

Quick answer

How do I add a watermark to a PDF?

Upload a PDF, enter watermark text or choose an image, customize the style and position, then download a new watermarked copy. The file is processed locally in your browser.

Privacy by default

Watermarking runs locally in this browser tab. Your original PDF stays on your device while a new marked copy is created.

The watermark workflow

How to watermark a PDF

Choose, style, and export

  1. 01

    Add one PDF

    Choose the document that needs a watermark.

  2. 02

    Customize the mark

    Enter text or upload an image and choose its style.

  3. 03

    Save a new copy

    Create and download the watermarked PDF.

Why use this PDF watermark tool

Make ownership and status visible

Flexible marks for real document workflows

01

Works locally after the page loads

Core processing runs in your browser after the page loads, so your files stay on your device.

02

No account required

Open the tool and get started without registration, email, or a recurring plan.

03

Fast document workflow

Simple controls keep common PDF tasks quick on desktop and mobile browsers.

04

Original file stays untouched

The tool creates a new result while your source file remains unchanged.

05

Privacy by design

Your document is handled locally for the core operation instead of being sent to a remote queue.

06

Free core tool

Upload a PDF, add text or an image watermark, then download a new copy.

Text, images, opacity, and placement

Watermark PDF FAQs

Text, images, opacity, and placement

Are my files uploaded?

Core processing runs locally in your browser after the page loads. Your source file stays on your device.

Do I need an account?

No. This tool is available without authentication or a recurring subscription.

What happens to my original file?

The original stays unchanged while the tool creates a new output file.

Can I use it on mobile?

Yes. It works in modern desktop and mobile browsers, subject to your device memory.

Is the original file changed?

No. The source file stays unchanged while a new output copy is created.

What files can I process?

Use a valid PDF supported by your browser and device memory.

Learn before you process

PDF guides for this workflow

Get the answer, understand the trade-offs, then use the focused tool when you are ready.

How to watermark a PDF (text, image or a PDF overlay)

Stamp text or an image on every page, or lay one PDF over another, and understand what a watermark does and does not protect.

Read the watermark guide

Best private PDF tools: browser-local vs cloud

A neutral guide to choosing a PDF tool when privacy matters: the questions to ask, a five-minute test you can run yourself, and which kind of tool fits which document.

Read the privacy guide

Comparing PDF tools? FreePDFKit vs iLovePDF · FreePDFKit vs Smallpdf · Browser-local vs cloud PDF tools

Related PDF tools

Verify it yourself

Your file is not uploaded. Here is how to check.

The core tools run inside your browser tab, so a document you open here is not sent to FreePDFKit or to anyone else. You can confirm that in about a minute.

  1. Step 1

    Open the tool and let it load

    Wait until the page has finished loading.

  2. Step 2

    Open your browser’s developer tools

    Press F12 (or Cmd+Option+I on a Mac) and switch to the Network tab.

  3. Step 3

    Run the tool on a test file

    Choose a non-sensitive file of the type the tool accepts and process it as usual.

  4. Step 4

    Look for a request that carries the file

    You will not find one. The page loads its own scripts, then the work happens in your browser.

What backs this up

  • Open-source libraries in the page. PDF handling uses libraries such as pdf-lib and Mozilla’s PDF.js, which run in your browser.
  • No PDF endpoint on the server. The only server routes are the contact form and the social-preview image generator.
  • A restrictive security policy. The site’s Content-Security-Policy limits the fetch and XHR connections page scripts can make to our own origin, Google analytics services and Cloudflare’s anti-spam check.

More detail in the privacy policy and how this compares with other no-upload options.