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Add Text Watermark to PDF — Confidential, Draft, Custom

Stamp any text on every page of your PDF. Customize font, color, opacity, and position for professional document marking.

Custom text content
Font, color, opacity control
Diagonal or horizontal
Applied to all pages
Permanently embedded
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Mark Your PDFs with Custom Text Watermarks

Text watermarks are the most common way to mark document status and ownership. A diagonal 'CONFIDENTIAL' stamp tells recipients how to handle the document. 'DRAFT' prevents confusion about document finality. Your company name asserts ownership.

Configure the text, size, color, opacity, and placement, then download the watermarked PDF ready for distribution.

Add Watermark to PDF

Protect your documents by adding text or image watermarks to all pages.

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Maximum file size: 50MB

What a Text Watermark Does

A text watermark overlays your chosen text on every page of the PDF. The text is embedded as a content stream element — not an annotation — making it permanent and visible in all viewing and printing contexts. You control the appearance: font size, color, opacity, rotation, and position.

Use cases include:

  1. 1

    Marking a proposal as 'CONFIDENTIAL' before sending to a client.

  2. 2

    Stamping 'DRAFT' on documents that are not yet finalized.

  3. 3

    Adding 'FOR REVIEW ONLY' to documents sent for feedback.

  4. 4

    Adding a copyright notice to published PDFs.

  5. 5

    Marking sample documents with 'SAMPLE' to prevent unauthorized use.

Text watermarks are the simplest and most common way to mark document status and ownership.

How to Add a Text Watermark to a PDF

Upload, configure text watermark, download.

  1. 1

    Upload the PDF you want to watermark.

  2. 2

    Enter your watermark text. Choose font size, color, and opacity.

  3. 3

    Set the position and rotation (diagonal is standard for watermarks).

  4. 4

    Download the watermarked PDF.

Upload, configure text, download. The watermark is applied to every page.

How it actually works

Upload your PDF and enter the watermark text.

Configure appearance: font size, color, opacity, rotation, position.

The text is rendered as a content stream element on each page.

Download the watermarked PDF.

Technical explanation

Text watermarks are rendered as PDF content stream elements.

The text is rendered using a specified font at the configured size and color.

Opacity is applied via the PDF graphics state (ExtGState) — the text is drawn with the specified alpha value.

The text element is positioned and rotated using a transformation matrix in the content stream.

When Text Watermarks Are the Right Choice

For status marking and copyright notices.

You get a tool that’s:

  • No image required — just type your text.
  • Fully customizable appearance.
  • Minimal file size impact.
  • Permanent embedding.

For status marking and copyright notices, text watermarks are simple, effective, and require no image assets.

What Text Watermarking Provides

  • Custom text content.
  • Font size and color control.
  • Opacity (transparency) adjustment.
  • Position and rotation control.
  • Applied to all pages.
  • Permanent content embedding.
  • No account required.

When not to use this tool

  • Using 100% opacity — the watermark completely obscures the document content.
  • Placing the watermark in a corner — it's easily overlooked. Center diagonal placement is more effective.

Best practices

  • For 'CONFIDENTIAL' watermarks, red text at 20% opacity, 45° rotation, centered is the professional standard.
  • For copyright notices, smaller text at the bottom of each page at 15% opacity is less intrusive.
  • Test the watermark on a single-page document first to verify the appearance before applying to the full document.

Alternatives

  • Two types of PDF watermarks.
  • Text watermark: Simple, no image required. Good for status marks (CONFIDENTIAL, DRAFT) and copyright notices. Minimal file size impact.
  • Image watermark: Uses a logo or graphic. Better for branding. Requires a PNG with transparent background for best results.

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Frequently Asked Questions

Find answers to common questions about our PDF tools

What text can I use as a watermark?

Any text — 'Confidential', 'Draft', 'For Review Only', your company name, copyright notice, or any custom text. There's no restriction on what the text says.

Can I customize the font and color of the text watermark?

Yes. You can adjust the font size, color, and opacity. Common choices are grey or red text at 20-30% opacity for a professional, non-obstructive watermark.

Can I rotate the text watermark diagonally?

Yes. Diagonal placement (typically 45°) is the standard for watermarks — it's visible across the page without being confined to a corner.

Will the text watermark be visible when printed?

Yes. The watermark is embedded in the PDF content and appears when printed, just as it appears on screen.

Can I add a multi-line text watermark?

For multi-line watermarks, add the text as separate lines. The tool places the text as configured across each page.

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