Add Watermark
Add text or image watermark to protect your image copyright. Full control over watermark style and position.
Drag image here or click to upload
or drop files here
Supports JPG, PNG, WebP formats, max 10MB
Preview
Watermark Type
Text Settings
Image Settings
Position Settings
Text Watermark: Custom text, font size, color and opacity
100% Secure
Local Processing: Images not uploaded, privacy protected
High Quality
Real-time Preview: WYSIWYG, see effects immediately after adjustments
How to Add Watermark
Step 1: Upload Image
Drag and drop or click to upload image that needs watermark
Step 2: Choose Watermark Type
Select text or image watermark and customize settings
Step 3: Adjust Position
Use 9-grid quick positioning or drag watermark to target location
Step 4: Download Image
After confirming the effect, download the watermarked image
About Add Watermark
Real User Experience
Easy-to-use Watermark Tool
Our watermark tool has helped over 500,000 users protect their image works. Whether professional photographers batch adding copyright watermarks, or personal users adding custom signatures to social media photos, it can be completed in seconds.
Intuitive Interface
Drag to adjust watermark position, click to edit content, no learning curve
Real-time Preview
See effects immediately after each adjustment, ensure perfect watermark position and style
Flexible Customization
From font size to opacity, color to rotation angle, fully customize to your needs
Batch Processing Support
Set once, apply to multiple images, greatly improve work efficiency
Professional Technical Capability
High-Quality Watermark Processing Technology
Uses Canvas 2D drawing technology and high-precision image processing algorithms to ensure image quality is not affected after watermark addition. Supports advanced features like transparency blending and anti-aliasing rendering for perfect watermark integration.
Canvas High-Precision Rendering
Uses native browser Canvas API for pixel-level precise control
Transparency Blending Algorithm
Supports Alpha channel blending for natural watermark integration
Vector Text Rendering
Text watermarks use vector drawing, stay clear at any scale
Image Quality Preservation
Output PNG format preserves original quality, or JPEG format controls file size
Industry Recognition
Trusted Copyright Protection Tool
Let Compress watermark tool is used by numerous photographers, designers and content creators. We focus on providing professional-grade image processing experience to help users protect their intellectual property.
500K+ Users Trust
Trusted by global users, processing over 5 million images
Photographer Recommended
Many professional photographers use our tool to protect copyrights
Enterprise Applications
Suitable for individuals, studios and enterprise scenarios
Continuous Optimization
Continuously improving features and experience based on user feedback
Security & Privacy Guarantee
100% Local Processing, Absolutely Safe
Your image security is our top priority. All watermark operations are done entirely locally in your browser, image data is never uploaded to any server. After processing, you can safely download results, original files are never saved or shared.
Local Browser Processing
All operations on your device, images never uploaded
Zero Data Collection
No collection, storage or transmission of any image data
Instant Deletion
Data in browser memory cleared immediately after processing
Open and Transparent
Core processing logic publicly transparent, subject to community review