Add Watermark to PDF

View documentation & API examples

Upload PDF

Drag and drop your file here or or

Watermark settings will appear after uploading
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The name will be automatically populated based on your uploaded file, but you can change it if needed.

Watermark Settings

Preview
CONFIDENTIAL

Processing PDF

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About PDF Watermarking

This tool allows you to add text watermarks to your PDF documents:

  • Customize text, size, and opacity
  • Choose from different colors
  • Set watermark direction (diagonal, horizontal, vertical)
  • Apply to all pages automatically
Illustration showing a watermark being added to a PDF
Note: Once added, watermarks become a permanent part of the PDF document and cannot be easily removed.
Tips for Best Results
  • Use 30-50% opacity for a balanced visibility
  • Diagonal watermarks are harder to remove
  • Adjust font size based on your document content
  • Use light gray for subtle watermarks
  • Consider using "CONFIDENTIAL" or "DRAFT" for sensitive documents
Frequently Asked Questions

Upload your PDF, enter your watermark text, adjust the font size, opacity, colour, and direction, then click Add Watermark — everything runs in your browser with no installation needed.

No. Once the watermark is applied it becomes a permanent part of the PDF content and cannot be easily removed, so keep a copy of your original file.

Yes, the watermark is automatically applied to every page of the document so your entire PDF is consistently marked.

Processed on ISO 27001-certified UK servers.

Files are encrypted in transit and automatically deleted.

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