How do I add a watermark to a PDF for free?

Open Add Watermark, upload your PDF, enter text or a logo, and download the result. It is free with no sign-up, and we never add our own watermark to your file.

Can I use an image or logo as a watermark?

Yes. You can upload a PNG or JPG logo and place it over every page, adjusting size, position, and opacity so it brands the document without obscuring the text.

Will the watermark appear on every page?

Yes. The watermark is applied to all pages in a single pass, with consistent placement and opacity throughout the document.

Can I control how strong the watermark looks?

Yes. Opacity, angle, and position are adjustable, so you can make a subtle background mark or a bold, fully visible stamp.

Are my documents kept private?

Files are processed in your browser where possible and, when a server step is needed, are encrypted and auto-deleted within 30 minutes. We never store your documents.

Do I need to install software?

No. Add Watermark runs online in any modern browser on desktop or mobile, with nothing to download or install.

Ajouter un filigrane — Outil en ligne gratuit

Utilisez immédiatement, gratuitement, sans inscription. Vos fichiers sont traités localement et jamais téléchargés.

By the AllFileBox Team · Last updated: 2026-07-04

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Add Watermark is a free online tool that stamps a text or image watermark over the pages of a PDF, helping you mark documents as draft, confidential, or your own.

Why watermark a PDF

A watermark signals ownership and status without changing the underlying content. Stamping CONFIDENTIAL, DRAFT, or a company name across each page deters unauthorized reuse and makes the document's purpose clear at a glance. It is a quick, professional way to protect work you share.

Text or image watermarks

You can add a text watermark with your own wording or upload a logo image. Position, opacity, and rotation are adjustable so the mark is visible without hiding the text beneath it. The watermark is applied to every page in one pass.

Comment l'utiliser Ajouter un filigrane

Open Add Watermark in your browser.
Drop your PDF onto the upload area.
Enter watermark text or upload a logo image.
Adjust opacity, position, and rotation.
Download the watermarked PDF.

Mark drafts

Stamp DRAFT across a document so reviewers know it is not final.

Protect shared files

Add a CONFIDENTIAL or company watermark before sending a PDF externally.

Brand proposals

Overlay a faint logo on each page to brand a client proposal.

Watermark options
Type	Best for	Adjustable
Text	Status labels	Opacity, angle
Image	Logos	Size, position
Tiled	Strong cover	Spacing

Outils liés

Caractéristiques clés Ajouter un filigrane

Fichiers traités localement — jamais envoyés sur aucun serveur

Traitement rapide dans votre navigateur grâce à WebAssembly

Pas besoin de compte, de connexion, ni d'inscription

100 % gratuit pour tous les cas d'utilisation standard

Disponible dans 70 langues dans le monde entier

Fonctionne sur n'importe quel appareil : ordinateur, tablette et mobile

Vos fichiers restent privés

Tout traitement se fait dans votre navigateur avec WebAssembly. Votre fichier n'est jamais envoyé à nos serveurs. Nous n'avons aucun accès à vos fichiers — garantie.

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