Filuni

PDF Watermark

Add text or image watermark to PDF files

or drop files here

PDF files supported, up to 100MB each

Private & SecureFiles are processed only, then auto-deleted
Easy to UseDrag & drop, batch processing, intuitive
Free ForeverUnlimited use, no sign-up
Fast & ReliableAdvanced tech, fast and stable

A watermark makes it clear at a glance how a PDF should be treated, whether that's a draft, a confidential file, or a copy that belongs to you. You can stamp text or an image across the pages, choose where it sits and how see-through it is, then download the marked file.

DRAFT
Text or logo watermark

How to add watermark to PDF?

  1. 1UploadClick 'Select Files' or drag & drop PDFs into the upload area.
  2. 2Set optionsChoose watermark type (text/image) and set position, opacity, rotation.
  3. 3ProcessClick 'Add Watermark' and wait for processing.
  4. 4DownloadDownload the watermarked PDF from the results section.

Common use cases

Mark a statusStamp DRAFT, CONFIDENTIAL or SAMPLE so no one mistakes a working copy for the final one.
Claim ownershipAdd your name, company or logo to a document before you send it out, so it's clear who it came from.
Brand a shared filePut a logo on proposals, quotes or reports going to clients.
Discourage casual reuseA visible mark makes a shared copy harder to pass off as someone else's.

Good to know

Text or imageUse a few words like 'Confidential', or upload a logo or signature image to use as the mark.
Position and opacitySet where the watermark sits and how transparent it is, so the text underneath stays readable. A faint, centred mark is the usual choice.
Applied across the documentThe watermark goes on the pages in one pass, so a long file is marked just as quickly as a short one.
It's a visible mark, not a lockA watermark sits on top of the page, so a determined person can still crop or cover it. For real control over copying or printing, set a password and permissions instead.

FAQ