Add a watermark to a PDF
Mark a document as Confidential, Draft, or with your own text, stamped across every page — all processed locally so the PDF never leaves your browser.
Open this tool in FileX →Free · runs 100% in your browser · no upload, no account
How it works
- Open the PDF mark tool and drop in your document.
- Enter the watermark text and apply it across the pages.
- Download the watermarked PDF.
Keep sensitive drafts local
Watermarking usually means uploading a confidential draft to an online tool — the opposite of confidential. FileX stamps it in your browser with pdf-lib, so it stays on your machine.
Frequently asked questions
Can I remove the watermark later?
Keep your original file — the watermark is applied to a downloaded copy. FileX does not alter your source document in place.