Marko Heijnen

CodeKitchen

DH-Shredder

In WordPress 3.5 all of the GD functionality has been abstracted out and with that power Imagick has been including to WordPress 3.5 too. Gmagick needs to wait a little bit more but with this plugin you can already use it.
If you want to know a little bit more about the changes you can look at: 
* https://make.wordpress.org/core/2012/12/06/wp_image_editor-is-incoming/ 
* http://markoheijnen.com/wordpress-new-image-manipulation/ 
* http://www.slideshare.net/markoheijnen/image-manipulation-in-wordpress-35

Gmagick

dFactory

Enhance your WordPress site’s image security and branding. Image Watermark allows you to apply image or text overlays to new uploads and bulk process existing Media Library images with ease.
<h4>Key Features:</h4>
<ul>
<li>Watermark Types: Choose from image-based or text-based watermarks with full customization.</li>
<li>Flexible Application: Automatic watermarking on uploads, manual/bulk apply/remove via Media Library.</li>
<li>Advanced Customization: Position watermarks precisely, adjust sizes, opacity, and more.</li>
<li>Backup & Restore: Secure backups for easy watermark removal.</li>
<li>Image Protection: Prevent copying via right-click, drag-and-drop, and developer tools.</li>
<li>Technical Excellence: Supports JPEG, PNG, WebP; ImageMagick/GD engines; preserves metadata.</li>
</ul>
Perfect for photographers, bloggers, and businesses looking to safeguard their visual content.
For more information, check out the <a href="http://www.dfactory.co/products/image-watermark/" rel="nofollow ugc">plugin page</a>, <a href="http://www.dfactory.co/docs/image-watermark/" rel="nofollow ugc">documentation</a>, or <a href="http://www.dfactory.co/support/forum/image-watermark/" rel="nofollow ugc">support forum</a>.
<h4>Feature Breakdown:</h4>
Watermarking Types: 
* Support for image-based watermarks (upload custom images as watermarks) 
* Support for text-based watermarks (customizable fonts, colors, and sizes) 
* Automatic watermarking on new uploads to the Media Library 
* Manual and bulk watermarking for existing images (apply or remove via Media Library actions)
Customization & Settings: 
* Flexible watermark positioning (9 alignment options with pixel or percentage-based offsets) 
* Three watermark size modes: original, custom dimensions, or scaled to image size 
* Adjustable watermark transparency and opacity 
* Watermark image preview for real-time adjustments 
* Selective application: Choose specific post types or enable everywhere (including frontend uploads) 
* Image format selection (baseline or progressive JPEG) 
* Configurable image quality settings
Backup & Management: 
* Automatic image backup functionality (stores originals for easy restoration) 
* Option to remove watermarks (restores from backups when available) 
* Secure backup storage with .htaccess protection
Image Protection: 
* Disable right-click context menus on images 
* Prevent image copying via drag-and-drop 
* Block access to developer tools for image inspection 
* Customizable protection notice/toast message displayed to users attempting to copy images
Technical Information: 
* Support for JPEG, PNG, and WebP image formats 
* Dual image processing engines: ImageMagick (preferred) with GD library fallback 
* EXIF and IPTC metadata preservation (where supported) 
* Cache-busting for immediate thumbnail updates after watermark changes 
* Translation-ready with included .pot file

Image Watermark

Secure and brand your images with automatic watermarks. Apply image or text overlays to new uploads and bulk process existing Media Library images wit …

Gmagick vs Image Watermark