Skip to main content
SlapMyWeb
Get started
Skip to tool
PDF & Documents tools/All tools
PDF & Documents

PDF Watermark

Add text or image watermarks to PDF pages. Custom position, opacity, rotation and color — 100% in your browser.

100% Client-Side — files never leave your device

What is PDF Watermark?

PDF Watermark is a free online tool that adds text watermarks to PDF documents. Customize the watermark text, font size, color, opacity, rotation angle, and position. Apply to all pages, odd pages only, or even pages only. Perfect for marking documents as CONFIDENTIAL, DRAFT, or adding your brand name. Everything runs in your browser — no files are uploaded to any server.

How to Use PDF Watermark

  1. 1

    Upload your PDF

    Click the upload area or drag and drop a PDF file.

  2. 2

    Configure watermark

    Enter your watermark text and adjust size, color, opacity, rotation, and position.

  3. 3

    Choose pages

    Apply to all pages, odd pages only, or even pages only.

  4. 4

    Preview

    Check the live preview to see how your watermark will appear on the page.

  5. 5

    Apply and download

    Click Apply Watermark and download the result.

Features

  • Custom watermark text
  • Adjustable font size (12-120pt)
  • Full color picker with opacity control
  • Rotation from -90° to +90°
  • 7 position presets
  • Apply to all, odd, or even pages
  • 100% client-side processing
  • No signup, no limits

Related Tools

PDF Merger

Combine multiple PDF files into one document. Drag to reorder pages before merging. 100% browser-based.

Open tool

PDF Compressor

Reduce PDF file size by optimizing images and removing metadata. See before/after compression ratio.

Open tool

PDF Splitter

Split a PDF into individual pages or custom page ranges. Extract specific pages instantly.

Open tool

PDF to Image Converter

Convert PDF pages to high-quality PNG, JPEG or WebP images. Batch export all pages at once.

Open tool

Image to PDF Converter

Convert JPEG, PNG and WebP images to a single PDF document. Custom page size and margins.

Open tool

PDF Text Extractor

Extract all text content from PDF files. Preserves paragraphs and formatting structure.

Open tool
See all PDF & Documents tools

You Might Also Need

Image Watermark

Image

PDF Page Numbers

PDF & Documents

PDF Compressor

PDF & Documents

Frequently Asked Questions

Can I add an image watermark?+
Yes! Switch to Image mode, upload a PNG or JPEG logo/watermark, adjust the scale and opacity, then apply. Perfect for brand logos and signatures.
Will the watermark be removable?+
The watermark is drawn directly onto the page content. It cannot be easily removed by viewers, making it suitable for document protection.
Can I watermark specific pages only?+
Yes. Choose "Odd Only" or "Even Only" to skip pages. For specific page selection, use our PDF Splitter to extract pages, watermark them, then merge back.
Are my files secure?+
Yes. Everything runs in your browser. No files are uploaded to any server.
What fonts are available?+
The tool uses Helvetica, a universal PDF font that renders consistently across all PDF viewers.
Can I preview the watermark?+
Yes. A live preview box shows the watermark text with your current settings before you apply it.
Does it work with large PDFs?+
Yes. The tool processes one page at a time, so even 100+ page documents work.
Is there a page limit?+
No limits on pages, file size, or daily usage.