Watermark PDF
Add a text watermark to every page. 100% in your browser — your file never leaves your device.
Your watermark is drawn on this device — the PDF is never uploaded.Files are processed on your device only. We never upload or store them. Some conversions (Office, OCR, encryption) are best-effort and may not preserve full layout.
About this tool
Watermark PDF overlays a text mark — such as “DRAFT”, “CONFIDENTIAL”, or your company name — across every page so the status of a document is unmistakable. It is widely used to flag unpublished work, discourage casual sharing, or brand internal papers. The tool prints your chosen words diagonally on each page in your browser, keeping the file private and on your device. You type the text and the tool applies it lightly enough to read around but clearly enough to notice. The result is a new PDF you download; your original is left unchanged. No account, no upload. Whether you are marking a contract as a draft or stamping a sample as “COPY”, a watermark is the simplest way to communicate a document’s status at a glance.
A watermark is the fastest way to say “handle this carefully” without a cover note. A lawyer stamps “DRAFT — NOT FOR FILING” on a working copy. A company brands internal memos with its name so they are not mistaken for final releases. A designer marks a preview “SAMPLE” before sharing with a client. A homeowner labels a permit “COPY” so the original stays distinct. A teacher marks an answer key “CONFIDENTIAL.” In each case the mark travels with the page, making the status obvious to anyone who opens it. Applying it locally means the document — possibly containing private terms — never uploads. You type the words, choose a light diagonal stamp, and get a clearly marked copy. It is a quiet signal that does real work. Because the mark rides with every page, the status stays obvious no matter where the file travels.
How it works & privacy
Enter the text you want — like “DRAFT” or your name — and press Run. The tool opens your PDF in the browser with pdf-lib and draws the watermark on every page at a low opacity, then downloads the new file. Nothing is uploaded. Your source stays intact and the watermarked version is saved on your device.
FAQ
What text can I add as a watermark?
Any short phrase — “DRAFT”, “CONFIDENTIAL”, or a name. It is drawn lightly across each page so the content stays readable.
Is my document uploaded?
No. Watermarking runs in your browser; the file never leaves your device.
Does it change my original?
No. A new watermarked PDF is created; your source document stays as it was.