How to Add a Watermark to a PDF (DRAFT, CONFIDENTIAL, Your Name)
A watermark tells everyone how to treat a document at a glance — that it's a draft, confidential, or a copy belonging to you. Adding one to a PDF is quick and, done right, completely private.
Add one in seconds
Open the Watermark PDF tool, upload your file, type your watermark text, and click the button. It draws your text diagonally across every page at low opacity — visible, but light enough that the content stays readable. Processing happens in your browser, so the document is never sent to a server.
What to write
DRAFT or NOT FINAL stops people acting on an unfinished version. CONFIDENTIAL or INTERNAL ONLY sets expectations on sharing. Your name or company marks ownership on portfolios and proposals. Keep it short — long watermarks get cluttered at an angle.
Watermark vs security
A visible watermark is a deterrent and a label, not encryption — a determined person can still remove it. For genuine restriction you'd need password protection (which most browser tools, including this one, can't add). Treat watermarks as "please respect this", not "you cannot open this".
Build the document first
Assemble everything before watermarking so the stamp covers the final pages: combine with Merge PDF, trim with Delete Pages, then watermark. Add page numbers afterwards if you need them.
Before you send it
Watermarked drafts are often emailed widely — shrink the file first with Compress PDF so it sails through attachment limits.