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图片水印工具
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支持 JPG、PNG、GIF、WebP、BMP 格式，最大 50MB

Image Watermark Tool - Professional Online Image Watermark Maker

Professional Online Image Watermark Tool | Text/Image Watermarks | Batch Processing | Local Privacy Protection | Free to Use

Image Watermark Tool is a powerful free online watermark maker designed for photographers, designers, content creators, and e-commerce sellers. It supports both text and image watermarks with rich customization options, helping you easily protect image copyrights, establish brand identity, and effectively prevent image theft and unauthorized use.

🌟 Why Choose Our Image Watermark Tool?

  • ✅ Completely Free - No registration required, unlimited use
  • ✅ Privacy Safe - Local processing, images never uploaded to servers
  • ✅ Feature Rich - Dual mode text/image watermarks, extensive customization
  • ✅ Real-time Preview - WYSIWYG, instant feedback on adjustments
  • ✅ Batch Processing - Add watermarks to multiple images efficiently
  • ✅ Universal Format - Supports JPG/PNG/GIF/WebP/BMP and all major formats
  • ✅ Professional Quality - Maintains original image quality with professional results

🚀 Core Features

📝 Text Watermark Features

  • Custom Text: Support any text content including multilingual and special characters
  • Font Selection: Multiple fonts available including Arial, Times New Roman, Verdana
  • Font Styling: Bold, italic, adjustable size (12-200px)
  • Color Settings: Full spectrum color picker with transparency control
  • Rotation Angle: -180° to 180° rotation at any angle

🖼️ Image Watermark Features

  • Logo Watermark: Upload company logos or personal marks as watermarks
  • Transparent Support: Perfect support for PNG transparent watermarks
  • Size Scaling: 10%-100% free scaling while maintaining aspect ratio
  • Blend Modes: Smart transparency blending for natural integration

⚙️ Advanced Settings

  • Position Control: 9 preset positions + custom coordinate precision
  • Transparency Adjust: 0-100% opacity balancing visibility and aesthetics
  • Margin Settings: Customize watermark distance from edges
  • Repeat Mode: Single watermark or full-screen repeat pattern
  • Spacing Adjust: Horizontal and vertical spacing for repeat watermarks

📋 Usage Guide

Quick Start

  1. Upload Image: Drag and drop or click to upload images needing watermarks
  2. Select Type: Choose text watermark or image watermark mode
  3. Configure Watermark: 
- Text watermark: Enter text, adjust font, color, size
- Image watermark: Upload logo image, adjust size
  1. Adjust Position: Select preset position or custom coordinates
  2. Preview Effect: Real-time preview of watermark effect
  3. Download Save: Click download button when satisfied

Watermark Type Selection Guide

TABLE0

Transparency Settings Reference

  • 80-100%: Strong emphasis, suitable for sample displays
  • 60-80%: Balanced aesthetics, suitable for social sharing
  • 40-60%: Light marking, suitable for portfolios
  • 20-40%: Invisible watermark, suitable for formal releases
  • 10-20%: Ultra-light watermark, suitable for background decoration

🎯 Application Scenarios

Photography Protection

  • Copyright Declaration: Add photographer name and copyright info to photos
  • Portfolio Display: Unified watermark style enhances professional image
  • Client Preview: Add sample watermarks to client preview images
  • Social Sharing: Prevent others from stealing your photography work

E-commerce Product Images

  • Brand Identity: Add store logos to product images
  • Anti-theft Protection: Prevent competitors from stealing product photos
  • Promotional Info: Add limited-time offers and marketing text
  • Batch Processing: Quickly add watermarks to large product catalogs

Design Work Display

  • Work Attribution: Mark designer information on design drafts
  • Draft Marking: Add "DRAFT" watermarks to unfinished work
  • Client Preview: Provide watermarked design preview images
  • Copyright Protection: Prevent design work from illegal use

Document Image Processing

  • Confidential Marking: Add "Confidential" watermarks to sensitive documents
  • Status Identification: Mark "Approved", "Pending" status indicators
  • Department Marking: Add department names for archive management
  • Timestamp: Record document creation or modification time

💡 Professional Tips

Watermark Design Principles

  1. Moderation Principle: Watermarks should not overly affect main image content
  2. Consistency: Use unified watermark style for image series
  3. Visibility: Ensure watermarks are clearly visible on various backgrounds
  4. Professionalism: Choose appropriate fonts and color combinations

Best Practice Recommendations

  • Photography: Use semi-transparent text watermarks in corners
  • Product Images: Use brand logos, centered or bottom-right position
  • Design Drafts: Use repeat watermarks at 45° diagonal arrangement
  • Document Images: Use large semi-transparent text, centered display

Batch Processing Tips

  1. Unified Settings: Test and perfect watermark effect on one image first
  2. Batch Apply: Use same settings for similar image batches
  3. Category Processing: Use different watermark schemes for different types
  4. Save Presets: Record common settings for repeated use

🔧 Technical Specifications

Image Format Support

  • Input Formats: JPG, JPEG, PNG, GIF, WebP, BMP, TIFF
  • Output Format: PNG (maintains highest quality and transparency)
  • Color Spaces: sRGB, Adobe RGB, Display P3
  • Maximum Size: 50MB per image

Browser Compatibility

  • Chrome: 60+ (recommended)
  • Firefox: 55+
  • Safari: 11+
  • Edge: 79+
  • Mobile: iOS Safari, Chrome Mobile

Performance Optimization

  • Canvas Rendering: HTML5 Canvas high-performance rendering
  • Memory Management: Automatic resource release, prevents memory leaks
  • Responsive Design: Perfect adaptation for desktop and mobile devices
  • Offline Use: PWA support for offline functionality

📊 Watermark Effect Comparison

Different Transparency Effects

TABLE1

Position Selection Guide

  • Bottom-right: Most common, doesn't affect subject, professional standard
  • Center: Strong protection, suitable for important files and designs
  • Top-left: Prominent position, suitable for brand promotion
  • Repeat Pattern: All-around protection, prevents cropping theft

❓ Frequently Asked Questions

Usage Questions

Q: Does it support batch watermarking? A: Yes, you can upload multiple images at once and process with same settings.
Q: Will image quality decrease after adding watermarks? A: No, we use lossless processing technology to maintain original quality.
Q: Can existing watermarks be removed? A: This tool only supports adding watermarks, not removing them.

Technical Questions

Q: Why choose PNG as output format? A: PNG supports transparency, perfectly preserves watermark effects with lossless compression.
Q: What's the maximum supported image size? A: Single images up to 50MB, recommend under 10MB for best experience.
Q: Can watermark settings be saved? A: Browser remembers your last settings, automatically restored on next use.

🌟 User Reviews & Cases

Real User Feedback

  • Photographer Mr. Wang: "Clean interface, powerful features, batch processing saves tons of time"
  • Taobao Seller Ms. Li: "Product images with store logo significantly improved brand image"
  • Designer Zhang: "Repeat watermark feature is very practical, no more worries about work theft"
  • Content Creator Xiao Zhao: "Simple operation, professional results, essential tool for content creators"

Success Stories

  • Photography studio reduced work theft by 90% after implementation
  • E-commerce store increased repeat purchase rate by 25% after adding brand watermarks
  • Design company improved brand recognition by 40% with unified watermark standards

🔐 Importance of Copyright Protection

Why Add Watermarks?

  1. Copyright Declaration: Clearly mark work ownership, protect legal rights
  2. Brand Promotion: Spread brand awareness through image distribution
  3. Theft Prevention: Increase theft cost, protect original content
  4. Professional Image: Unified watermarks enhance professionalism

Legal Effect of Watermarks

  • Watermarks serve as preliminary evidence of copyright ownership
  • Have certain legal effect in rights protection litigation
  • Recommend combining with other copyright protection measures
  • Important works should undergo copyright registration

🎨 Design Aesthetic Recommendations

Font Selection

  • Serif Fonts: Elegant and formal, suitable for art photography
  • Sans-serif Fonts: Modern and clean, suitable for commercial use
  • Script Fonts: Unique personality, suitable for creative design
  • System Fonts: Choose clear, readable fonts for consistency

Color Matching

  • White Watermark: Suitable for dark backgrounds, classic versatile
  • Black Watermark: Suitable for light backgrounds, strong contrast
  • Brand Colors: Strengthen brand recognition, maintain consistency
  • Semi-transparent: Balance visibility and aesthetics

🔗 Related Tool Recommendations

🚀 Start Using Image Watermark Tool Now

This professional free online image watermark tool helps you easily protect image copyrights and establish brand identity. Supports both text and image watermark modes with rich customization options to meet various needs. Local processing ensures privacy and security, no registration required.

🎯 Suitable For

  • Photographers - Protect work copyrights, display professional image
  • Designers - Prevent work theft, mark creation information
  • E-commerce Sellers - Add store branding, prevent image theft
  • Content Creators - Protect original content, increase exposure
  • Corporate Users - Unify brand image, standardize image usage

📱 Multi-platform Support

  • 💻 Desktop - Full support for Windows, macOS, Linux
  • 📱 Mobile - Perfect adaptation for iOS and Android browsers
  • 🌐 Browsers - Chrome, Firefox, Safari, Edge and all major browsers
  • 📴 Offline Use - PWA support, works without internet

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