Add a Watermark to Your PDF
Stamp text like "CONFIDENTIAL" or "DRAFT" across every page — free, and processed entirely in your browser.
Drag and drop a PDF file here
or click to browse (max 100MB)
About PDF Watermark
PDF Watermark stamps a custom text overlay — like "CONFIDENTIAL", "DRAFT", or your company name — onto every page of a PDF. Adjust the size, color, opacity, rotation, and layout, then preview the result live before downloading. All processing happens locally in your browser, so your documents are never uploaded anywhere.
Features:
- Add any custom watermark text to every page at once
- Adjust font size, opacity, color, and rotation angle
- Choose a single centered stamp or a tiled repeating pattern
- Live preview updates instantly as you adjust settings
How to Add a Watermark to a PDF
- Upload your PDF file by dragging and dropping or clicking to browse
- Type your watermark text and adjust font size, opacity, color, and rotation
- Choose a single centered stamp or a tiled repeating layout
- Click "Apply Watermark & Download" to save your watermarked PDF
Frequently Asked Questions
Is this watermark tool really free?
Yes. PDF Watermark is completely free to use, with no sign-up required and no limit on the number of files you can process.
Will the watermark be visible when I print the PDF?
Yes. The watermark is drawn directly onto each page as permanent text, so it appears both on screen and when the PDF is printed.
Can I control how transparent the watermark looks?
Yes. Use the opacity slider to make the watermark as subtle or as bold as you like, from a faint overlay to a solid stamp.
Can the watermark be removed later?
No, not easily. The text is drawn permanently into the page content, similar to how a printed stamp works. If you need a removable watermark, keep a copy of your original, unwatermarked file.
What's the difference between single and tiled layout?
Single layout places one centered watermark on each page. Tiled layout repeats the watermark text in a grid across the whole page, which makes it harder to crop or edit out.
Why can't I use Chinese, Japanese, or Korean characters in the watermark?
This tool uses a standard PDF font (Helvetica) that only supports Latin and other WinAnsi-encoded characters. If your watermark text contains unsupported characters, you'll see a warning — try using Latin letters, numbers, or basic punctuation instead.
Privacy & Security
All watermarking happens directly in your web browser. Your PDF files are never uploaded to any server, and no data leaves your device at any time.