Free · Private · No upload

Add a watermark to PDF

Apply custom diagonal watermark text to every page with adjustable opacity.

PDF to watermarked PDF in three steps

Use the focused local workflow to prepare a downloadable result without sending the source file to an application server.

  1. Choose your PDF file

    Drop it into the tool or browse from your device.

  2. Review your settings

    Choose the options available for this conversion.

  3. Download the watermarked PDF

    Keep the result in your workspace or download it immediately.

Common questions

Is this PDF to watermarked PDF converter free?

Yes. The local converter is available without an account or per-file charge.

Are my files uploaded?

No. Supported conversions run locally on your device using browser APIs and WebAssembly.

Will complex formatting look identical?

Text and document structure are preserved where possible. PDFs use layout-aware reconstruction and automatic local OCR for scanned pages, though very unusual fonts or visual layouts can still differ.