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.

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

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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