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Watermark PDF: add text to any page

Add a text watermark to every page of a PDF. Diagonal center mark, tiled pattern or corner stamp. 100% secure, nothing uploaded, nothing stored. No quality loss, no sign-up, no extra branding.

  • 100% secure and private
  • Nothing stored, ever
  • No quality loss
  • Works offline

100% secure. Your PDF is never uploaded or stored. How we keep it private

  • 100% Secure
  • No Upload
  • No Storage
  • No Sign-up
  • Works Offline
  • No Quality Loss

Three watermark styles

Each style suits a different use case.

  • Diagonal

    One large watermark across the center of each page. Classic DRAFT or CONFIDENTIAL.

  • Tiled

    Repeated pattern across the whole page. Hardest to remove. Good for strict protection.

  • Corner

    Small discreet mark in the corner. Good for copyright or version stamps.

All PDF tools

19 free PDF tools: flatten, edit, merge, split, compress, convert, rotate, sign, protect and more. Nothing uploaded, ever.

See all ToolDeck tools

How it works

  1. 1

    Drop your PDF

    Drag or click to choose. Nothing is uploaded, nothing is stored.

  2. 2

    Enter your watermark

    Type the text, pick a style, adjust color, size, opacity and angle.

  3. 3

    Download watermarked PDF

    Click Apply. Get a watermarked PDF with original quality. No extra branding.

Everything you get for free

  • 100% secure, nothing uploaded

    Watermarks are drawn in your browser using pdf-lib. Your contracts, drafts and confidential files never touch a server.

  • No quality loss

    We draw text on top of the existing pages. Nothing is re-rendered, nothing is compressed. Original quality is preserved exactly.

  • Three watermark styles

    Diagonal center mark, tiled pattern, or a small corner stamp. Pick the one that fits your use case.

  • Full customization

    Custom text, color, font size, opacity and rotation angle. Everything updates live in the preview.

  • No sign-up, no email, no watermark of our own

    Open, drop the PDF, add your watermark, download. We never add our own mark on top of yours.

  • Works offline

    Once the page has cached pdf-lib, you can switch off WiFi and watermark PDFs locally.

What people use it for

  • Mark documents as DRAFT

    Put DRAFT across every page so reviewers know this version is not final.

  • Confidential or internal

    Add CONFIDENTIAL or INTERNAL ONLY for restricted documents.

  • Copyright notice

    Stamp a copyright line in the corner of every page before sharing publicly.

  • Client review copies

    Watermark previews with a client name so you know who has what version.

  • Invoice branding

    Add your business name or invoice number as a corner watermark.

  • Prevent casual copying

    A tiled watermark makes screenshots and casual re-use obvious.

Questions people ask

Is my PDF uploaded anywhere?

No. Watermarks are drawn in your browser using pdf-lib. Your files never leave your device, so we cannot see them even if we wanted to.

Is it really 100% secure?

Yes. There is no upload step, no server processing, no temporary storage. Open your browser network tab while you use the tool and you will not see your PDF being sent anywhere.

Does watermarking reduce the quality of my PDF?

No. We draw text on top of the existing pages. Text, images and layout are preserved exactly as they were.

Can I choose the watermark color?

Yes. There are presets for gray, red, blue and green, plus a custom color picker.

What is a tiled watermark?

The watermark text is repeated across the whole page in a grid. This makes it much harder to remove in an image editor, and it makes any screenshot obviously marked.

Can I watermark only some pages?

Not in this version. All pages are watermarked. Page-range selection is on our roadmap.

Does it strip PDF text or forms?

No. We only add content on top. Text stays selectable and any existing form fields remain in place.

Is there a file size limit?

No. iLovePDF caps free users at 5MB. We impose no limit. The practical limit is your device memory.

Does it work on iPhone and Android?

Yes. Safari on iOS and Chrome on Android both work. No app needed.

Does it work offline?

Yes. Once the page has cached pdf-lib, you can switch off WiFi and watermark PDFs locally.

Can I use special characters in the watermark?

Yes, but we use the built-in Helvetica font which supports standard ASCII and most European characters. Very rare symbols may not render.

Can I remove a watermark I added?

Not with this tool. Use the original PDF. Always keep a clean copy before watermarking.

100% secure, nothing stored

Watermarks are drawn entirely in your browser. There is no upload step, no temporary server-side storage, no database, no retention. Open your browser network tab while you use the tool and you will not see your PDF being sent anywhere. See why ToolDeck is different.