Tool4SaaS

PDF Watermark

Stamp your PDFs with custom text watermarks. Adjust text, opacity, and placement, then download your watermarked file.

PDF Watermark

Add a text watermark to every page of a PDF. Files are processed locally in your browser and never uploaded.

No file selected (max 1)

Drawn on each page via drawText.

Opacity: 0.30

Position

Where the watermark is placed on each page.

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About the author

Written and maintained by the Tool4SaaS team. Every tool runs locally in your browser and is tested in-house for accuracy. Last updated: .

Frequently asked questions

Center diagonal or corners with opacity control via pdf-lib drawText.

No, diagonal or corner text draws with pdf-lib locally; your PDF never leaves the browser.

Yes, it is free, works offline in your browser, and your data never leaves your device.

How to use PDF Watermark

  1. Choose PDF: Select a PDF up to 10MB.
  2. Enter text: Type watermark and set opacity.
  3. Apply: Click Watermark and download.