Add Watermark

Add text or image watermarks to your PDF with custom position, size, color, and opacity

100% browser-based — no upload

or drag and drop files here

Please upload a PDF file

Instructions

  • Supports both text and image watermarks
  • Choose from 9 positions and adjust size, color, and opacity
  • Image watermarks work best with PNG transparent backgrounds
  • All processing is done locally in your browser
Open source on GitHubNo data collectionFiles stay localNo server upload

What you should know

A watermark signals ownership or status — "Draft," "Confidential," or a logo. It is a visual deterrent, not copy protection: anyone with basic editing skills can still remove it. Think of it as a polite but visible warning.

  • Text or image watermarks — type a label or upload a PNG logo with transparency.
  • Opacity matters — 20–30% opacity keeps the document readable while making the mark visible.
  • Place it where it cannot be cropped easily — diagonal across the page center is harder to remove than a corner stamp.

Read the full PDF watermark guide →

This batch tool processes multiple PDFs at once, applying the same operation to every file you upload. It runs entirely in your browser — files are never sent to a server — and results are packaged for easy download.

  • Upload multiple files — drag and drop a folder or select individual PDFs to process in one go.
  • Same settings for all files — configure the operation once and it is applied uniformly across the batch.
  • Results packaged for download — processed files are bundled into a ZIP archive for convenience.

Browse all PDF tools →

About Watermark PDF

A watermark tells readers who owns the document or what status it has: "Draft," "Confidential," or a company logo. It is a visual signal rather than a security lock, but it discourages casual sharing and helps recipients understand how to treat the file.

This tool lets you add either text or an image watermark. Text watermarks are quick and flexible; image watermarks work best with a transparent PNG logo. You can adjust opacity, angle, and position to keep the mark visible without making the document hard to read. A diagonal watermark across the page center is harder to crop out than a corner stamp.

Processing happens entirely in your browser. The original file is not uploaded anywhere, so drafts and confidential documents stay private. The watermark is added as a separate layer on each page, leaving the underlying text and images untouched.

Keep in mind that watermarking is not copy protection. Anyone with an editor can remove it. For stronger protection, consider password-protecting the PDF or using desktop software like Wondershare PDFelement. For watermarking many files at once, use Batch Watermark PDF.

We use cookies to keep the site working and, if you accept, measure usage with GA4. See our Privacy Policy for details.