Add Watermark to PDF Online Free

Add Watermark — stamp text or an image across every page

Add Watermark overlays a visible mark on your PDF — “DRAFT,” “CONFIDENTIAL,” a logo, or custom text — so shared copies stay branded or status-labeled. Tune opacity, rotation, size, and corner/center placement, preview, then download — free on pdfLaunch.

Need sequential page counters instead? Use Add Page Numbers. Password-locking the file? That is Protect PDF. Drawing a signature? Use Sign PDF.

Watermark options that matter

Text or image

Type a phrase (Helvetica, black) or upload a PNG/JPEG/GIF logo. Switch type anytime before download.

Five placements

Center (classic diagonal draft look) or any of the four corners for quieter branding.

Opacity, rotation, size

Fade the mark (about 10–100%), angle it (−180° to 180°, default 45°), and scale size so it reads without burying content.

Every page gets the stamp

The watermark is applied across all pages in the PDF so a shared pack stays consistently marked.

How to watermark a PDF here

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1

Upload the PDF

Choose a file up to 25 MB. Thumbnails and a live canvas preview help you judge coverage.

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2

Configure the stamp

Pick text or image, set position, opacity, rotation, and size. Watch the preview update as you drag the sliders.

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3

Download the marked PDF

pdf-lib embeds the watermark in your browser and saves pdflaunch-with-watermark.pdf — no server convert step.

When people stamp a watermark

📝 Draft / sample labels — mark unfinished PDFs before client review.

🔒 Confidential banners — “INTERNAL ONLY” across board packs and HR files.

🏷️ Brand logos — light corner or center marks on proposals and portfolios.

📸 Photo / proof PDFs — discourage casual reuse of preview packs.

🎓 Course materials — school or trainer name on handouts you distribute.

A watermark is visible deterrence, not encryption. For open-password protection use Protect PDF. For irreversible black-out of secrets use Redact PDF.

Watermark vs page numbers, protect, and sign

→ Add Watermark (this page): overlay text or image on all pages for status or branding.

→ Add Page Numbers: sequential counters for citation — not a logo stamp.

→ Protect PDF: password gate opening or editing — different from a visible mark.

→ Sign PDF: place a signature field or drawn signature, not a repeating watermark.

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Watermarking stays on your device

pdf-lib draws the stamp in the browser — no convert upload to our servers

Local overlay: PDF and optional image are processed in the page, then downloaded from an object URL.
No convert upload: unlike OCR or Office converters, watermarking does not send files for server processing.
Optional cloud pickers: Drive / Dropbox / OneDrive only fetch the PDF into the browser session.
No account wall: stamp and download without registering.

Add Watermark FAQ

Can I use an image logo as the watermark?

Yes. Switch to Image and upload PNG, JPEG, or GIF, then adjust size, opacity, and rotation.

Does the watermark appear on every page?

Yes. The stamp is applied to all pages in the uploaded PDF.

Where can I place the watermark?

Center, top-left, top-right, bottom-left, or bottom-right.

Can I make the mark semi-transparent?

Yes. Opacity ranges from light (about 10%) to fully solid so content can still be read underneath.

Can I rotate the watermark diagonally?

Yes. Rotation goes from −180° to 180° (45° is a common draft-style default).

Is a watermark the same as password protection?

No. A watermark is visible labeling. Protect PDF adds a password barrier to open or restrict the file.

Is this the same as adding page numbers?

No. Page numbers are sequential counters. Watermarks are branding or status overlays.

How large can the PDF be for watermarking?

Up to 25 MB for a single PDF upload.

Are my files uploaded to add a watermark?

No. Watermarking runs in your browser with pdf-lib.

Do I need a pdfLaunch account to watermark a PDF?

No. Upload, configure, and download without registering.

Drop your PDF file here

Add Watermark