eaxjp

Image will be shrink in the case of automatic JPEG and PNG format to upload the image. 
There are the following features in isShrinker WordPress Plugin.
Can specify the maximum file size. 
Keep aspect ratio. 
Convert image inclination from inclination information of image
If you upload, such as iPhone app slope of image because reduced after correction 
it appears in the blog exactly as it appears in the iPhone.
The maximum file size of the image is 50KB by default 
Length of the long side of the image is 640px by default 
And it is with, but you can change from the management screen of WordPress.
Upload png image ‘watermark.png’ to plugin directory and then watermark will be enable. 
Watermark add on right bottom of image. 
If watermark enabled water mark transparency setting is enable.
<h3>Arbitrary section 1</h3>

isShrinker

When uploading, it will shrink the image automatically. The feature is  keeping the aspect ratio and  maximum file size can be specified.

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 …

isShrinker vs Image Watermark