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Watermark PDF

Apply watermarks with control over opacity, rotation, position, and layer.

Drop your files here
or from your device
PDF
Your files never leave your device unless required.
No registration required · Completely free
Processing
Stamp every page with text — set the opacity and angle to match.
Add PDF files above to begin.
Up to 100 MB per filewatermark.v1
About Watermark PDF

Brand every page with text or an image.

Watermark PDF stamps text or an image across every page of a document. Position it as a subtle draft label, a bold 'confidential' overlay, or a corner logo — Sable gives you pixel-level control over placement, opacity, rotation, and whether the watermark sits above or below the content.

Supported formats
PDF
Included
  • Batch processing
  • API access
  • Encrypted transport
  • No file retention
Use cases

What people use Watermark PDF for.

Mark drafts

Add a 'DRAFT' watermark so early versions can't be mistaken for final.

Brand deliverables

Stamp a client-facing PDF with your logo in the corner.

Flag confidentiality

Overlay 'CONFIDENTIAL' before sharing sensitive material.

Deter reuse

Watermark shared research so screenshots can be traced back.

How to watermark pdf

Three steps, no learning curve.

01
Upload your PDF.
02
Choose text or an image watermark, then tune opacity, angle, and layer.
03
Preview and download the watermarked file.
Why Watermark PDF

Built for people who care about their documents.

Text or image

Use custom text with any font, or upload a PNG or SVG logo.

Above or below

Overlay content or sit behind it — your call, per page.

Per-page control

Skip cover pages, or only stamp odd pages.

Batch stamping

Apply one watermark to a whole folder of PDFs.

Privacy & Security

Your documents belong to you.

Sable is designed around a single principle: your files are yours. We never train on them, never sell them, and never keep them longer than we need to.

AES-256 encryption
End-to-end encryption in transit and at rest for every file.
Auto-deleted in 1 hour
Files are permanently purged from our systems after processing.
SOC 2 & GDPR
Independently audited controls with EU data residency options.
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FAQ

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