Add Watermark to PDF Online for Free

Customize Your Watermark: Text, Position, Size, and Opacity

A free, easy-to-use online tool to watermark your PDF pages in seconds. Simply upload your PDF, customize your watermark settings, and download your protected document.

Upload with the button below or drag-and-drop onto the dashed region

Watermark Options

50
45°
50%
70%

How to Add a Watermark to PDF Free in 4 Steps

1. Upload Your PDF

Click to select or drag and drop your PDF file into the tool.

2. Customize Your Watermark

Set your watermark text, then adjust the position, size, opacity, and font to match your needs.

3. Preview & Confirm

Use the zoom view to preview exactly how your watermark will appear across your PDF pages before downloading.

4. Download Your Watermarked PDF

Click download and get your fully watermarked PDF instantly for free.

Why Use Our Add Watermark to PDF Tool ?

The easiest way to add a watermark to any PDF.

Lightning Fast

Add a watermark to your PDF in seconds. Upload, customize, and download — the whole process takes less than a minute.

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100% Free

No hidden fees, no subscription required. Add watermarks to as many PDFs as you need, completely free.

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Privacy First

Your PDF is processed securely in your browser and deleted after 2 hours. We never store or share your documents.

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Full Watermark Customization

Control your watermark text, position, size, opacity, and font so it looks exactly the way you need it.

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Live Preview Before Download

See exactly how your watermark will appear across every page before you download.

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Works on Any PDF

Whether it's a contract, report, invoice, or certificate, our tool adds watermarks cleanly to any PDF document.

Get started for FREE, No Creditcard required

Build Document Automation That Scales With APITemplate

APITemplate is an API-first platform that generates professional PDFs and images at scale from reusable templates, raw HTML, or URLs. Integrate via REST API, SDKs, or no-code tools like Zapier, Make, and n8n.

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Frequently asked questions

What is a PDF watermark adder?

A PDF watermark adder is a free online tool that lets you add text watermarks to your PDF pages. Simply upload your PDF, customize the watermark settings, and download your watermarked document.

Can I add a text watermark to a PDF without Adobe?

Yes. You don't need Adobe Acrobat or any paid software. Our free online PDF watermark tool lets you add custom text watermarks directly in your browser on any device.

Will the watermark appear on every page of my PDF?

Yes. The watermark is automatically applied to every page of your PDF, so your entire document is consistently protected or branded.

Can I make the watermark transparent or semi-transparent?

Yes. You can control the opacity of your watermark from fully visible to subtle and semi-transparent. So it doesn't overpower the content of your document.

Is it safe to upload confidential documents to add a watermark?

Yes. Your PDF is processed securely and the data is not stored on our server.

Can I position the watermark anywhere on the page?

Yes. You can set the Position X (left, center, right) and Position Y (top, middle, bottom) of your watermark, and further fine-tune its exact placement using the Offset X and Offset Y values. Once you're happy with the position, click Apply and Download to get your watermarked PDF.

Does adding a watermark change the quality of my PDF?

No. Our tool adds the watermark without affecting the original formatting, text, images, or quality of your PDF document.

Can I also protect or lock my PDF after adding a watermark?

Yes. Once you've added your watermark, you can use our free Lock/Unlock PDF tool to password-protect your document for an extra layer of security.

Can I compress my PDF after adding a watermark?

Yes. If your watermarked PDF is too large to share, use our free Compress PDF tool to reduce the file size without losing quality.

How to watermark PDF pages online?

  1. Go to the online watermark tool.
  2. Click on the 'Select a PDF' button to upload your file or drag and drop the PDF into the designated area.
  3. Enter the watermark text you want to add in the 'Watermark Text' field.
  4. Adjust the settings such as font size, rotation, opacity, font color, and font family to customize the watermark.
  5. Set the position X and Y, then use the offset values to fine-tune where the watermark appears on the page.
  6. Click 'Refresh' to preview your changes in the preview pane.
  7. Once you are satisfied with the watermark, click 'Apply and Download' to download your watermarked PDF.

What is APITemplate.io?

APITemplate.io is designed for generating PDF documents from reusable templates. It can be easily integrated with popular tools like Zapier, Airtable, Make.com, Bubble.io, n8n, UiPath, or directly via REST API, making it highly adaptable to various workflows.

There are three main ways to generate PDF documents using APITemplate.io:

  1. Template-based PDF generation: Create PDFs from predefined templates.
  2. HTML to PDF generation: Convert HTML content directly into PDF format.
  3. URL to PDF generation: Convert entire web pages to PDFs by simply providing their URLs.

The platform also supports custom CSS and JavaScript, allowing for advanced styling and customization. Its powerful template engine ensures that you can create complex documents efficiently, while the API Console enables you to preview and customize JSON data instantly.

In addition, APITemplate.io offers support for adding custom headers and footers, including page numbers and total page counts, making it an excellent choice for creating polished, professional PDF documents.

Related Free PDF Tools

Whatever comes next, compressing, merging, splitting, or converting APITempate has a free tool ready for it. Explore all free PDF tools and keep the work moving.

Still Adding Watermarks to PDFs One by One? Automate It.

Use our PDF generation API to programmatically generate bulk watermarked PDFs from reusable templates or raw HTML. Pass your data via REST API, or connect your workflow with no code platforms like Zapier, Make.com, or n8n.

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