vogelundstrauss

Definition: NextGEN ZCropper is a plugin that resizes and crops(!) your pictures while uploading. It will always match your selected width and height, trying to display as much as possible of the original image. 
Why: I found several people like me requesting an instant crop functionality for NextGEN Gallery Images (not only the thumbnails). Here it is 😉 Any feature requests: Go to http://vogelundstrauss.de/blog 
Required: This plugin requires <a href="http://alexrabe.de/" rel="nofollow ugc">Alex Rabe’s</a> – <a href="https://wordpress.org/extend/plugins/nextgen-gallery/" rel="ugc">NextGEN Gallery Plugin</a>
To report bugs/give feedback/request support, please visit the vogelundstrauss.de/blog <a href="http://vogelundstrauss.de/blog" rel="nofollow ugc">wordpress plugin support</a>.
Tested with
NextGEN Gallery 1.8.2 and WP 3.2.x
<h3>How To</h3>
<ol>
<li>Go to settings page of the plugin</li>
<li>Switch ON/OFF</li>
<li>Select target width and height inside image options tab of NextGEN Gallery Options (see second screenshot)</li>
<li>Important: Keep the resize on upload option DE-activated inside image options tab </li>
<li>Upload pictures to your galleries using NextGEN image upload menu</li>
<li>DONE</li>
</ol>
NOTE: You require NextGEN Gallery Plugin by http://AlexRabe.de!

NextGEN – Z Cropper

NextGEN Z Cropper is a plugin that resizes and crops(!) your pictures while uploading them (not only thumbnails!). If the picture does not match your  …

aviplugins.com

Speed up your website by serving images in WebP format. This plugin will replace files in standard JPEG, PNG and GIF formats with WebP format.
After installation go to plugin settings and enable webp images. You can convert all images in Media Library or convert selected images only. The plugin will reduce the size of the image without compromising image quality.
The plugin will ditect if Webp images are supported by the client browser or not and then serve the images accordingly. 100 images can be converted per month.
<h4>Webp Converter PRO</h4>
The PRO version can convert 500 images per month. Get it for USD 2.00 Check it out <a href="https://www.aviplugins.com/webp-converter-pro/" rel="nofollow ugc">here</a>.
<blockquote>
Post your plugin related queries at <a href="https://www.aviplugins.com/support.php" rel="nofollow ugc">https://www.aviplugins.com/support.php</a>
</blockquote>

Webp Converter

Convert Media Library images in next-gen format and speed up your website

NextGEN – Z Cropper vs Webp Converter