How to Add Watermark to PDF
Watermarks help protect intellectual property, mark document status (DRAFT, CONFIDENTIAL), or brand your PDFs. SublimePDF lets you add customizable text or image watermarks to any PDF.
Follow the step-by-step instructions below, then use the free tool directly — no registration or download required.
Open Tool →How to Add Watermark to PDF — Step by Step
Upload your PDF
Open the Edit PDF tool and upload the document you want to watermark.
Configure watermark
Enter text (e.g., 'CONFIDENTIAL', 'DRAFT') or upload a logo image. Adjust size, opacity, rotation, and position.
Apply to pages
Choose to apply the watermark to all pages or specific pages, then download.
Pro Tips
- 💡 Use 30-50% opacity for a watermark that's visible but doesn't obstruct content
- 💡 Diagonal watermarks (45°) are the most common for text-based watermarks
- 💡 Use your company logo as an image watermark for branding
Privacy & Security
All processing happens directly in your browser. Your files are never uploaded to any server — they remain on your device throughout the entire process. SublimePDF uses WebAssembly technology for fast, secure, client-side processing.
Works Everywhere
This tool works on any modern browser — Chrome, Firefox, Safari, or Edge — on desktop, tablet, or mobile. No software to install. PDF is an open ISO standard supported by all major platforms.
How to Add Watermark to PDF — FAQ
Can I add a watermark to specific pages only?
Can I add both text and image watermarks?
Related Guides
How to Add Page Numbers to PDF
Adding page numbers to a PDF makes documents easier to navigate and reference. Whether it's a report, manuscript, or legal document, SublimePDF lets you add customizable page numbers in seconds.
How to Add Header Footer To PDF
Headers and footers in PDFs add professional touches like page numbers, document titles, dates, and company branding. Whether you're preparing a report, thesis, or legal filing, consistent headers and footers make multi-page documents easier to navigate and reference. SublimePDF lets you add customizable headers and footers without Adobe Acrobat.
How to Stamp PDF Document
Stamping a PDF adds a visible overlay — like 'APPROVED,' 'CONFIDENTIAL,' 'DRAFT,' a date stamp, or a custom logo — across one or all pages of your document. Stamps communicate document status at a glance and are standard practice in legal, government, and corporate workflows. SublimePDF lets you apply text stamps, image stamps, and dynamic stamps (with auto-populated dates and usernames) to any PDF.