Watermark PDF
Add a custom text or image watermark to every page of your PDF — free, browser-based. Set opacity, angle, position and font size. No upload needed.
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Up to 100 MB · PDF only
About Watermark PDF
Protect your PDF documents with professional watermarks applied directly in your browser. Add a diagonal "CONFIDENTIAL" or "DRAFT" text watermark in any color, opacity, and size, or overlay a logo image as a semi-transparent watermark. Customize the position (center, corners, or diagonal full-page), apply the watermark to all pages at once, and preview the result before downloading. 100% private — your file stays on your device.
What is Watermark PDF?
A watermark tells everyone how a document should be treated: DRAFT, CONFIDENTIAL, COPY, or your company name across every page. Watermark PDF stamps text over your document so its status or ownership is unmistakable, on every page, in a way that is hard to miss and hard to remove casually.
The watermark is applied in your browser, so the document is never uploaded. You set the text, the tool overlays it across the pages, and you download the watermarked PDF. It is the straightforward way to mark drafts, protect ownership, or label sensitive material before you share it.
Key features
Custom watermark text
Stamp whatever the document needs — CONFIDENTIAL, DRAFT, a client name, a copyright line — so its purpose or owner is clear at a glance on every page.
Applied across all pages
The watermark is placed consistently throughout the document, so there is no page that slips out unmarked when it is forwarded or printed.
Discourages misuse
A visible watermark signals ownership and status, which deters casual copying, reuse or passing off a draft as final far more effectively than a note in the filename.
Private, in-browser stamping
Because the watermark is added on your device, a sensitive document is labelled without being uploaded to a server, keeping its contents to yourself.
Who uses Watermark PDF
Designers and agencies
Stamp proofs and drafts so clients cannot mistake a preview for the final file.
Businesses
Mark internal documents CONFIDENTIAL before circulating them.
Photographers and creators
Add a copyright or name watermark to protect ownership of shared work.
Legal and finance teams
Label copies, drafts and originals clearly to avoid version mix-ups.
Benefits at a glance
- Makes a document’s status (draft, confidential, copy) obvious.
- Asserts ownership to discourage unauthorised reuse.
- Marks every page so nothing escapes unlabelled.
- Applies privately without uploading the file.
- Free, with no account and no added branding.
Tips and best practices
- Keep watermark text short and clear — a single word like CONFIDENTIAL reads better than a sentence.
- Apply the watermark to the final version after merging and editing, so every page is covered.
- Use a watermark for visible labelling and a password (Protect PDF) for actual access control — they do different jobs.
- Keep an unwatermarked master copy so you can produce a clean version later.
- For shared proofs, a watermark plus a clear filename leaves no doubt about which version someone has.
The manual way vs. Watermark PDF
Technical information
- Input format
- A PDF file
- Output format
- A watermarked PDF
- Coverage
- Text applied across all pages
- Processing
- In your browser — the file is not uploaded
The bottom line
A watermark is a small touch that prevents real confusion — a draft mistaken for final, a confidential file shared carelessly, work reused without credit. Watermark PDF applies that label across your whole document in seconds, privately and for free. Mark it, download it, and share it knowing its status is unmistakable.
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Your privacy is built in
Everything in Watermark PDF runs locally in your browser — your data never leaves your device and is never uploaded to a server, so nothing you enter is stored or seen by anyone else. No account, no sign-up, no watermark, and completely free.