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Converter Hub / PDF privacy protection

PDF Text Watermark

Add custom text watermarks to every PDF page with adjustable angle, size, color and opacity.

Back to Converter Hubpdf-lib / SheetJS Local processing

Set a text watermark

The watermark is drawn across the center of every page at your chosen angle.

Progress0%

Choose a file to begin.

Output preview

Waiting for an output file.
Features and quick guide

Why use this tool?

Use browser-side PDF drawing to mark every page for drafts, internal documents and shared copies.

3-step quick guide

  1. 1
    Choose a PDF and wait for the page count.
  2. 2
    Enter text and set angle, size, color and opacity.
  3. 3
    Apply the mark locally and download a new PDF.

Privacy promise

PDF and spreadsheet bytes are parsed and exported only in this browser tab; they are never sent to a server.

No file-upload endpoint is used; speed depends on your device and browser support.

Frequently asked questions

Will the watermark cover body text?

It uses semi-transparent text at page center; review readability before sharing.

Can I change the color?

Yes. Use the color picker and opacity slider.

Is the original modified?

No. The output is a new local Blob file.