ChrisHurst

MyWebsiteAdvisor

This plugin allows you to watermark your previously uploaded images using a PNG image file with transparency as well as text signature. 
The user friendly settings page allows for control over the appearance of your watermark. 
You can set your watermarks to always be a specific percentage of the target image. 
This plugin will add the watermarks to ALL of the images in your WordPress uploads directory.
Please BACK UP all of your uploads via FTP before using this plugin!
<a href="http://mywebsiteadvisor.com/plugins/bulk-watermark/" rel="nofollow ugc">Upgrade to Bulk Watermark Ultra</a> for advanced 
watermark features including:
<ul>
<li>Fully Adjustable Text and Image Watermark Positions</li>
<li>Adjustable JPEG Image Output Quality</li>
<li>Highest Quality Watermarks using Image Re-sampling rather than Re-sizing</li>
<li>Lifetime Priority Support and Update License</li>
</ul>
Check out the <a href="http://www.youtube.com/watch?v=XkFXBjfzw2I&hd=1" rel="nofollow ugc">Bulk Watermark Plugin for WordPress Video Tutorial</a>:
<iframe loading="lazy" title="Bulk Watermark for WordPress Tutorial" width="750" height="422" src="https://www.youtube.com/embed/XkFXBjfzw2I?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
Developer Website: http://MyWebsiteAdvisor.com/
Plugin Support: http://MyWebsiteAdvisor.com/support/
Plugin Page: http://mywebsiteadvisor.com/plugins/bulk-watermark/
Compare Watermark Plugins: http://MyWebsiteAdvisor.com/tools/wordpress-plugins/watermark-plugins-for-wordpress/
Video Tutorial: http://mywebsiteadvisor.com/learning/video-tutorials/bulk-watermark-tutorial/
Requirements:
<ul>
<li>PHP v5.0+</li>
<li>WordPress v3.3+</li>
<li>GD extension for PHP</li>
<li>FreeType extension for PHP</li>
</ul>
To-do:

Bulk Watermark

Adds an image and/or text watermark to all uploaded images, using PNG images with transparency.

MantraBrain

Ultimate Watermark is the most comprehensive WordPress image watermarking plugin available. This professional-grade solution automatically adds watermarks to images as they are uploaded to your WordPress media library, protecting your valuable content from unauthorized use.
🔒 Protect Your Images with Professional Watermarking
Built with both GD and ImageMagick support, Ultimate Watermark offers enterprise-level watermarking capabilities with extensive customization options. Whether you’re a photographer protecting your portfolio, an e-commerce store branding product images, or a content creator safeguarding your work, this plugin provides the tools you need.
🎯 Perfect for: 
* Professional photographers and studios 
* E-commerce websites and online stores 
* Content creators and bloggers 
* Corporate websites and portfolios 
* Digital artists and designers 
* Media companies and publishers
<h4>🎯 Key Features & Benefits</h4>
🖼️ Advanced Image Watermarking System 
* Automatic Watermark Application – Watermarks are applied instantly when images are uploaded 
* Bulk Watermark Operations – Process existing images in your media library with bulk actions 
* Frontend Watermarking – Support for user-uploaded images on the frontend 
* Multi-Size Targeting – Watermark specific image sizes (thumbnail, medium, large, custom) 
* Custom Post Type Support – Apply watermarks only to specific post types
⚙️ Professional Configuration Options 
* Watermark Image Management – Upload and manage multiple watermark images 
* Flexible Size Control – Choose from Original size, Custom dimensions, or Scaled percentage (1-100%) 
* Transparency Control – Adjust opacity from 0% (invisible) to 100% (fully visible) 
* Quality Optimization – Configure output image quality (1-100%) for optimal file sizes 
* Format Selection – Choose between Baseline or Progressive JPEG for better compatibility
📍 Precise Watermark Positioning 
* 9-Position Grid System – Top/Middle/Bottom × Left/Center/Right alignment options 
* Advanced Offset Controls – X and Y positioning with pixel or percentage units 
* Professional Results – Pixel-perfect positioning for brand consistency
🛡️ Comprehensive Image Protection 
* Right-Click Disable – Prevent image downloading through right-click 
* Drag & Drop Prevention – Stop users from dragging images to their desktop 
* User-Level Protection – Optional protection settings for logged-in users 
* Enhanced Security – Multiple layers of image protection
💾 Smart Backup & Recovery System 
* Automatic Backup Creation – Original images are safely backed up before watermarking 
* Configurable Backup Quality – Set backup image quality to balance file size and preservation 
* Safe Watermark Removal – Restore original images by removing watermarks 
* Data Integrity – Maintain image quality and metadata throughout the process
🔧 Technical Excellence & Performance 
* Dual Library Support – Works with both GD and ImageMagick for maximum compatibility 
* Metadata Preservation – Maintains EXIF and IPTC data for professional workflows 
* Memory Optimization – Efficient processing for large image libraries 
* WordPress 6.4 Ready – Fully compatible with the latest WordPress version 
* GPLv3 License – Open source with WordPress compatibility
<h4>🚀 Quick Setup</h4>
<ol>
<li>Install & Activate the plugin</li>
<li>Upload Watermark Image in Watermark Image settings</li>
<li>Enable Automatic Watermarking in General Settings</li>
<li>Select Target Image Sizes (avoid full size unless necessary)</li>
<li>Configure Position & Settings as needed</li>
</ol>
<h4>📋 Detailed Features</h4>
General Settings 
* Toggle automatic watermarking for new uploads 
* Enable manual watermarking for media library 
* Select specific image sizes for watermarking 
* Target custom post types 
* Enable frontend watermarking
Watermark Image Settings 
* Upload and manage watermark images 
* Size control: Original, Custom (X/Y pixels), or Scaled (1-100%) 
* Transparency adjustment (0-100%) 
* Output quality control (1-100%) 
* Image format selection (Baseline/Progressive)
Position Settings 
* 9-position alignment grid 
* X and Y offset values 
* Offset units (pixels or percentages) 
* Precise positioning control
Protection & Backup 
* Right-click disable option 
* Drag and drop prevention 
* Logged-in user protection toggle 
* Automatic backup creation 
* Backup quality settings
<h4>🎨 Use Cases</h4>
<ul>
<li>Photography Websites: Protect professional images</li>
<li>E-commerce: Brand product images</li>
<li>Portfolio Sites: Add copyright protection</li>
<li>Blogs: Prevent image theft</li>
<li>Corporate Sites: Maintain brand consistency</li>
</ul>
<h4>🔧 Technical Requirements</h4>
<ul>
<li>WordPress 5.0 or higher</li>
<li>PHP GD extension OR ImageMagick</li>
<li>Sufficient server memory for image processing</li>
<li>Write permissions for upload directory</li>
</ul>

Ultimate Watermark – Advanced Image Watermarking

Automatically add professional watermarks to your images with advanced positioning, protection features, and backup capabilities.

Bulk Watermark vs Ultimate Watermark – Advanced Image Watermarking