Add Image Watermark to PDF with Logo Stamping
Stamp custom logos and watermark images onto PDF pages with scale and opacity controls.
Select Target PDF
Click to upload document
Select Logo / Image
PNG, JPG or WebP logo
Related PDF Tools
What is Add Image Watermark to PDF?
Add Image Watermark to PDF stamps company logos, graphic emblems, approval seals, or verification badges across all pages of your documents. Whether branding client proposals with transparent PNG logos, applying certified official stamps to architectural plans, or marking sample documents with graphic copyright insignias, this tool gives you precise control over logo placement, scaling dimensions, and transparency opacity. It references graphic assets efficiently within the document dictionary, keeping output file sizes compact and lightweight.
How to Use Add Image Watermark to PDF in 4 Easy Steps
Step 1
Upload your target PDF document and your logo image file (PNG, JPG, or SVG).
Step 2
Select watermark placement (Center, Top Right, Bottom Right, or Custom position).
Step 3
Adjust the image scale slider and transparency opacity percentage.
Step 4
Click Stamp Image Watermark & Download to embed your graphic seal across all pages.
Honest Technical Specifications & Limits
Supported Image Formats
Stamps high-resolution PNG (with transparency), JPG, and SVG graphic assets.
Opacity & Blending
Adjust transparency from faint 10% background tint to 100% solid graphic overlay.
Multi-Page Stamping
Automatically applies identical logo sizing and positioning across all document pages.
Privacy First: 100% Client-Side In-Browser Processing
100% In-Browser Local Execution. Add Image Watermark to PDF operates directly inside your browser memory using client-side JavaScript and WebAssembly. Your data is never transmitted over the internet or logged on remote servers. You can open Developer Tools (F12) Network tab to verify zero outbound network calls.
Verify it yourself: Open your browser's Developer Tools (F12 or Inspect), switch to the Network tab, and perform your action. You will observe zero outbound data uploads — your data never leaves your computer.
Popular Real-World Use Cases
Corporate Logo Branding
Stamp your company logo in the corner of customer whitepapers and marketing brochures.
Architectural & Engineering Approval Seals
Embed digital engineering stamps and certified architect emblems onto structural drawing sets.
Paid Sample Document Protection
Apply semi-transparent graphic watermarks over eBook preview chapters to deter unauthorized sharing.
ToolboxHive vs. Traditional Converters
| Feature / Requirement | ToolboxHive Add Image Watermark to PDF | Typical Upload Websites |
|---|---|---|
| Account and Signup | No account needed | Often requires email/login |
| File Upload to Remote Server | 0% (Local browser only) | Uploaded to remote cloud |
| Watermarks Added | Never (100% clean output) | Frequently added on free tiers |
| Processing Speed | Instantaneous (No queues) | Dependent on upload/queue speed |
| Daily Usage Limits | Unlimited free conversions | 2-3 files per day limit |