HomeToolsWatermark Pdf

Add Watermark to PDF Online Free

Stamp a diagonal text watermark across every page of your PDF. Fast and free.

Choose Files

or drop a file here

256-bit EncryptionMax 50 MB per file

Options

Text will be stamped diagonally across every page at 35% opacity.

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Processing Status

Waiting for upload…

Pro Features
  • • Unlimited processing
  • • Up to 500 MB per file
  • • No advertisements
Upgrade to Pro

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Why use our Watermark Pdf tool?

  • Custom text watermark on every page
  • Diagonal placement at 45°
  • Subtle 35% opacity — professional look
  • Free, instant, no signup

Common use cases

  • 1Mark documents as CONFIDENTIAL or DRAFT
  • 2Add copyright notices to PDF documents
  • 3Brand documents with your company name
  • 4Mark review copies before final approval
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How it works

1

Upload your file

Select or drag-and-drop your file. Supports PDF, Word, Excel, images and more.

2

Apply settings

Configure options if needed and click the convert button.

3

Download result

Your file is ready instantly. Automatically deleted after 2 hours.

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Frequently asked questions about Watermark Pdf

How do I add a watermark to a PDF?

Upload your PDF, type your watermark text (e.g. CONFIDENTIAL), and click Watermark PDF. The text appears diagonally across every page.

Can I change the watermark position or colour?

Currently the watermark is diagonal at 35% opacity. Custom colours and positions are available on the Pro plan.

Can the watermark be removed?

The watermark is embedded into the PDF as text. It cannot easily be removed without the original file.

🔒 Your files are encrypted with 256-bit SSL and permanently deleted from our servers 2 hours after processing. We never read or share your documents.