Watermark PDF

Add text watermarks to your PDF pages. Customize text, size, opacity, angle, and position. Free, private, all in your browser.

About Watermark PDF

Add text watermarks to your PDF pages. Customize the text, font size, opacity, color, and rotation angle. Watermarks are applied to all pages with corner variations for full coverage. All processing in your browser.

Custom Text

Add any text as a watermark — DRAFT, CONFIDENTIAL, your company name, or any custom message.

Full Control

Adjust font size (24-96pt), opacity (5-50%), rotation angle, and RGB color values.

Full-page Coverage

Watermarks appear at center and all four corners of each page for comprehensive protection.

Non-destructive

Watermarks are added as a visual layer. Original PDF content remains unchanged underneath.

📋 Common Use Cases

Protect Copyrighted Content

Add a semi-transparent copyright or watermark to PDF portfolios, ebooks, and creative work before distribution.

Mark Draft Documents

Stamp DRAFT or CONFIDENTIAL across early version documents to prevent premature use or distribution.

Brand Client Deliverables

Add your company logo or name as a watermark on proposals, invoices, and reports sent to clients.

Label Internal Documents

Mark internal-use-only PDFs with department names or access levels for better document governance.

🪜 How to Use This Tool

Upload PDF document
Select the PDF file you want to watermark by dragging it onto the upload area or browsing your files.

Customize watermark
Enter watermark text or upload an image, then adjust opacity, position, rotation, and font size to your liking.

Apply to selected pages
Choose whether to watermark all pages, specific pages, or only odd or even pages in the document.

Download watermarked PDF
Click download to save your PDF with watermarks permanently embedded into the pages.

Frequently Asked Questions

Is this PDF tool really free?▼

Yes. Every PDF tool on iluv.tools is completely free. No signup, no account, no payment. Everything runs in your browser.

Are my PDF files uploaded to a server?▼

No. All PDF processing happens locally in your browser using the pdf-lib and PDF.js libraries. Your files never leave your device.

Do these PDF tools work offline?▼

Basic PDF tools (merge, split, compress, rotate, sign, watermark, protect, unlock, add page numbers, edit metadata, flatten, grayscale, crop, delete pages) work completely offline after the page loads. AI-powered tools like smart compression and PDF to Word require an internet connection.

Is there a file size limit?▼

Browser-based tools handle files up to ~100MB smoothly. Larger files may be slower depending on your device. For very large PDFs, try splitting them first, processing the parts, then merging.

Can I use these on mobile?▼

Yes. All PDF tools work on mobile browsers (iOS Safari, Android Chrome). Desktop is recommended for large files, but everything is functional on mobile.