PDF Watermark

Stamp text across every page of a PDF as a diagonal watermark.

PDF documents Client-side pdf-lib

Tool preview

How to use it

! Only the built-in Latin font is embedded; other scripts would need a custom font file.
! The watermark is an added text layer, which a determined editor can still remove.

Can I use non-Latin text?

Not with the standard PDF font used here; the characters would not render.

Does it change the page layout?

No, the text is drawn on top of the existing content.

Is the watermark secure?

It is a deterrent, not protection; the page content remains editable.

Processing happens in your browser using the File API, WebAssembly and Web Workers. There is no upload endpoint.

Inspect a PDF author, producer, creation date and XMP data.

Delete the author, producer, timestamps and XMP from a PDF.

Permanently delete the text instead of covering it with a black box.