PDF Watermark Confidential

Generate dynamic confidential watermark with username and timestamp

Overlay a dynamic watermark such as "Internal Use Only" or "Confidential".

Dynamic parts:

  • Username
  • Timestamp (ISO or local)
  • Optional tiled layout across all pages

Example Results

2 examples

Tiled Internal-use Watermark

Adds repeated INTERNAL USE ONLY watermark with username and ISO timestamp on all pages

pdf-watermark-confidential-example1.pdf View File
View input parameters
{ "sourceFile": "/Users/quyue/www/elysia-tools/public/samples/pdf/pdf-2026-02-19-source-4pages.pdf", "username": "alice.wang", "policyText": "INTERNAL USE ONLY", "timestampMode": "iso", "opacity": 0.22, "rotateDeg": -30, "fontSize": 26, "colorHex": "#b91c1c", "tile": true }

Centered Confidential Stamp

Places a single centered CONFIDENTIAL watermark with local timestamp for audit copies

pdf-watermark-confidential-example2.pdf View File
View input parameters
{ "sourceFile": "/Users/quyue/www/elysia-tools/public/samples/pdf/pdf-2026-02-19-source-4pages.pdf", "username": "audit.bot", "policyText": "CONFIDENTIAL", "timestampMode": "local", "opacity": 0.3, "rotateDeg": -20, "fontSize": 30, "colorHex": "#1d4ed8", "tile": false }

Click to upload file or drag and drop file here

Maximum file size: 300MB Supported formats: application/pdf

Key Facts

Category
Documents & PDF
Input Types
file, text, select, number, color, checkbox
Output Type
file
Sample Coverage
4
API Ready
Yes

Overview

Secure your documents by adding dynamic, personalized watermarks to any PDF. This tool allows you to overlay professional labels like 'Confidential' or 'Internal Use Only' combined with your username and a precise timestamp to ensure document traceability and compliance.

When to Use

  • •When sharing sensitive internal documents that require clear ownership and status labels.
  • •Before distributing drafts or reports to prevent unauthorized sharing or leakage.
  • •When you need to create an audit trail by stamping files with specific user identifiers and timestamps.

How It Works

  • •Upload your source PDF file to the tool.
  • •Enter your username and select the desired policy label and timestamp format.
  • •Adjust visual settings like opacity, rotation, font size, and color to match your branding.
  • •Choose between a tiled layout for full-page protection or a single centered stamp, then generate your watermarked PDF.

Use Cases

Adding 'Confidential' stamps to financial reports before emailing them to stakeholders.
Applying 'Internal Use Only' watermarks to company policy documents to prevent external distribution.
Stamping draft contracts with a username and timestamp to track document versions during negotiations.

Examples

1. Tiled Internal-use Watermark

Project Manager
Background
The manager needs to share a sensitive project plan with the internal team.
Problem
Preventing accidental external sharing of sensitive project details.
How to Use
Upload the PDF, set the policy to 'INTERNAL USE ONLY', enable tiling, and set opacity to 0.22.
Example Config
policyText: INTERNAL USE ONLY, tile: true, opacity: 0.22
Outcome
The document is protected with a repeating 'INTERNAL USE ONLY' watermark across all pages, including the user's name and ISO timestamp.

2. Centered Confidential Stamp

Compliance Officer
Background
An audit report requires a clear, professional marking for internal record-keeping.
Problem
Ensuring the document is clearly marked as confidential without cluttering the text.
How to Use
Upload the report, select 'CONFIDENTIAL', disable tiling, and set the color to blue for a professional look.
Example Config
policyText: CONFIDENTIAL, tile: false, colorHex: #1d4ed8, rotateDeg: -20
Outcome
A single, centered 'CONFIDENTIAL' stamp is applied to the document, providing a clean and authoritative appearance.

Try with Samples

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FAQ

Can I customize the watermark text?

Yes, you can select from predefined policy labels such as 'CONFIDENTIAL', 'INTERNAL USE ONLY', or 'DO NOT DISTRIBUTE'.

Does the tool support tiled watermarks?

Yes, enabling the 'Tile Watermark' option will repeat the watermark across the entire page for enhanced security.

What timestamp formats are available?

You can choose between ISO 8601 format or your system's local time format.

Can I adjust the transparency of the watermark?

Yes, you can set the opacity between 0.08 and 0.85 to ensure the watermark is visible without obscuring the document content.

Is my file data stored on your servers?

Files are processed in memory and are not permanently stored; they are cleared immediately after the download is complete.

API Documentation

Request Endpoint

POST /en/api/tools/pdf-watermark-confidential

Request Parameters

Parameter Name Type Required Description
sourceFile file (Upload required) Yes -
username text Yes -
policyText select No -
timestampMode select No -
opacity number No -
rotateDeg number No -
fontSize number No -
colorHex color No -
tile checkbox No -

File type parameters need to be uploaded first via POST /upload/pdf-watermark-confidential to get filePath, then pass filePath to the corresponding file field.

Response Format

{
  "filePath": "/public/processing/randomid.ext",
  "fileName": "output.ext",
  "contentType": "application/octet-stream",
  "size": 1024,
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}
File: File

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-pdf-watermark-confidential": {
      "name": "pdf-watermark-confidential",
      "description": "Generate dynamic confidential watermark with username and timestamp",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=pdf-watermark-confidential",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

Supports URL file links or Base64 encoding for file parameters.

If you encounter any issues, please contact us at [email protected]