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Guide · PDF

How to add a confidential watermark to a PDF

Drafts, invoices, and student work often need a visible stamp before they leave your desk. ChargeBite overlays vector text (or a logo) and leaves the original text selectable.

Updated 2026-09-08

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Why vector matters

Many “watermark” sites flatten every page into a picture. That ruins search and copy. This tool draws the stamp on top of the existing page streams, so contracts stay documents.

Step-by-step

  1. Open Watermark PDF.
  2. Upload the PDF. Locked files should be unlocked first.
  3. Enter stamp text (try CONFIDENTIAL), set opacity and rotation, optionally add a logo.
  4. Limit to a page range if you only need a cover stamp, then download.

FAQ

Does the stamp flatten the PDF?

No. It is a vector overlay. Existing text stays selectable.

Will ChargeBite add its own logo?

No. Only the text or image you provide is stamped.