Add text or image watermarks to your PDF documents. Customize position, opacity, rotation, and style. No signup, no watermarks from us - 100% free and private.
Add text watermarks with custom fonts
Add image watermarks (PNG, JPEG, logos)
Customize position (center, corners, tiled)
Adjust rotation angle (diagonal, horizontal)
Control opacity/transparency level
Choose font size, color, and style
Apply to all pages or specific pages
Preview watermark before saving
Fast client-side processing
100% private - files never leave your device
No watermarks added by us
Works on all devices
Add "CONFIDENTIAL", "DRAFT", or "SAMPLE" watermarks to protect sensitive documents.
Add your company logo as a watermark for professional branding on all documents.
Add copyright notices and ownership marks to prevent unauthorized use.
Mark documents as "APPROVED", "PENDING", "FOR REVIEW" to indicate their status.
Add "COPY", "ORIGINAL", or case numbers to legal documents for tracking.
Watermark course materials and handouts with institution branding.
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The most versatile and private PDF watermark tool. Full control over text and image watermarks.
Add custom text with your choice of font, size, color, and opacity.
Upload your logo or any image to use as a watermark on your PDFs.
Control position, rotation, opacity, and size for perfect placement.
Files never leave your device. All processing happens in your browser.
Add watermarks to your PDFs in seconds with fast JavaScript processing.
Use on any device - Windows, Mac, Linux, iOS, Android.
Add professional watermarks to your documents in 4 simple steps
Click the upload area or drag and drop your PDF file. Your file stays on your device - nothing is uploaded to any server.
Select text watermark to add custom text, or image watermark to upload your logo. Text watermarks let you customize font, size, and color.
Adjust position (center, corners, tiled), rotation angle, opacity level, and size. Preview the watermark on your document before applying.
Click apply to add the watermark to all pages, then download your watermarked PDF. Your original file remains unchanged.
See how Edesy compares to Adobe Acrobat and other online tools
| Feature | Edesy | Adobe | Others |
|---|---|---|---|
| Free to use | |||
| No signup required | |||
| No file upload (private) | |||
| Text watermarks | |||
| Image/logo watermarks | |||
| Custom positioning | |||
| Opacity control | |||
| Mobile friendly |
More free tools to work with your PDFs
A PDF watermark is a text or image that appears behind or on top of the content of each page in a PDF document. Watermarks are commonly used to indicate document status (DRAFT, CONFIDENTIAL), establish ownership, protect intellectual property, or add branding to documents.
Text watermarks use words or phrases like "CONFIDENTIAL", "DRAFT", "SAMPLE", or "DO NOT COPY". They are fully customizable with different fonts, sizes, colors, and positions. Image watermarks use graphics like company logos, stamps, or signatures. They are ideal for branding and can include transparent backgrounds for professional results.
Businesses use watermarks to protect confidential documents from unauthorized sharing. Publishers add watermarks to review copies and proofs. Legal professionals mark documents as copies or originals. Educational institutions brand course materials. Photographers protect digital proofs with logo watermarks.
For readability, use 20-40% opacity so the watermark is visible but does not obstruct content. Diagonal placement (45 degrees) works well for status watermarks like "DRAFT". Center placement is best for logos and branding. Use contrasting colors - gray works well on most documents. For security, larger watermarks covering more area are harder to remove.
While watermarks do not prevent copying, they deter unauthorized distribution and establish ownership. Visible watermarks make it clear a document is not for redistribution. For sensitive documents, combine watermarks with password protection using our Protect PDF tool for comprehensive security.
Unlike other online tools that upload your files to servers, our PDF watermark tool processes everything in your browser. Your PDF and watermark images never leave your device - the processing uses JavaScript running locally. This is the most secure option for confidential documents.