rob1n

This plugin does two things to your dashboard:
<ul>
<li>The WordPress News and Other WordPress News sections are removed. You don’t even load them. Why? So you won’t have to bother 
with the AJAX call for the news. Also, it looks neater.</li>
<li>The sidebar (with incoming links, recent posts, etc.) is made more horizontal, with four columns instead of the default one. 
This makes it so you can see all the information at one glance, rather than having to scroll down.</li>
</ul>

Cleaner Dashboard

Removes the WordPress news sections and reorganizes the sidebar for maximum screen usage. See the screenshots for more details.

OriginalEXE

If you were ever annoyed about the way WordPress handles images resizing, this is a plugin for you.
What this plugin does is it optimizes the image handling in such a way that images are resized only when they are actually needed. What that means is that if your plugins/theme define a lot of image sizes, none of them will be generated on the image upload (like they would be usually), but only if they are actually requested in that size.
Resizing is done only once, images are later normally served by WordPress, so there is no performance hit.
Plugin also includes a method for removing all of the previously generated image sizes (useful when you install this plugin on a site with a lot of existing media).
TO REMOVE image sizes generated prior to activating the plugin, visit the ‘Tools -> Remove image sizes’ and use the button to perform the cleanup.
Other than that, you don’t need to do anything, plugin works silently in the background.
To sum up:
<ul>
<li>Resize images only when needed</li>
<li>Clean up existing images sizes</li>
<li>No performance hit</li>
<li>Free up your hosting space</li>
</ul>

Optimize Images Resizing

Hello! nice plugin one click option and all done!
add a custom search for images to detele.
ex. -unsmushed.jpg

God Job! Need More Features!

Plugin optimizes the process of generating custom image sizes in WordPress and offers a cleanup functionality for preexisting images.

Cleaner Dashboard vs Optimize Images Resizing