Fichiers

Ajouter un filigrane à un PDF

Ajoutez un filigrane texte ou image à toutes les pages ou à une plage de pages.

Your files are processed locally in your browser and never uploaded.

Vos fichiers sont traités localement dans le navigateur et ne sont jamais téléversés.

Mode d’emploi

  1. Choose a readable PDF and select Text or Image / logo.
  2. Set opacity, angle, position, spacing and a page range such as 1-3,5.
  3. Preview the first page, apply the watermark and download the page-preserving PDF.

Idéal pour

  • Confidential document labels
  • Draft and copyright notices
  • Branding reports with a logo

Private, local PDF processing

BrightTools reads the selected PDF in your browser and never uploads it. File contents, names and passwords are not sent to analytics. A shared 50 MB and 200-page safety limit keeps memory use predictable on phones and desktops.

Quality and validation

Compression renders each page at a bounded resolution, encodes it as JPEG and checks the real output bytes. Target-size pages use a finite coarse-to-fine search; they never delete pages or create blank or damaged PDFs. The result is reparsed to confirm page count and page dimensions before download.

Related PDF tools

Need to prepare a document first? Merge PDFs, split pages, organize pages, convert an image to PDF or export a PDF to images.

À savoir

Watermarks are embedded visual stamps. Original text remains intact, but the stamp itself is not editable as PDF text. Transparent logos are converted to PNG locally.

Questions fréquentes

Can I watermark only selected pages?

Yes. Enter a validated range such as 1-3,5; duplicate and out-of-range page numbers are rejected.

Does it support Chinese and emoji?

Yes. Text is rendered through the browser canvas and embedded as a crisp PNG stamp.

Can I use a logo?

Yes. PNG, JPG and WebP logos are accepted; transparency and aspect ratio are preserved.

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