SpectrOMTech

Dave Jesch

The SpectrOM DB Cleanup tool will remove selected old and unused data in your database tables and then rebuild the MySQL indexes for all of your tables. This helps to ensure that your index files do not get corrupted and that your data can be accessed efficiently.
<blockquote>
Support Details: We are happy to provide support and help troubleshoot issues. Users should know however, that we check the WordPress.org support forums once a week on Fridays from 10am to 12pm PST (UTC -8). Daily support and issue reports are handled via our GitHub repository here: <a href="https://github.com/spectrom/spectrom-db-cleanup/issues" rel="nofollow ugc">https://github.com/spectrom/spectrom-db-cleanup/issues</a>. Please read our support notes here before creating new issues.
</blockquote>
The SpectrOM DB Cleanup tool was specifically designed for data-driven sites such as eCommerce, Learning Management Systems and BuddyPress.
The SpectrOM DB Cleanup Features:
<ul>
<li>Removal of selected old and unused data in your database tables</li>
<li>Rebuilds the MySQL indexes for all of your tables</li>
<li>Configurable so you can indicate what sections to Cleanup</li>
<li>eMail a report to indicated recipients</li>
<li>Automation at specified day and time</li>
</ul>
This DB Cleanup helps to ensure that your database index files do not get corrupted and that your data can be accessed efficiently.
Want to help make this tool even better? Participate in GitHub at <a href="https://github.com/spectrom/spectrom-db-cleanup" rel="nofollow ugc">https://github.com/spectrom/spectrom-db-cleanup</a>. Or <a href="http://spectromtech.com/products/spectrom-db-cleanup/" rel="nofollow ugc">Contact SpectrOM</a> for more information on how you can participate.

SpectrOM DB Cleanup

Removes unnecessary data with Reporting features. Reduces Site Crash and Downtime.

Francesco Sganga

Optimize images (jpg, png) in your WordPress site by converting them to .webp extension (it uses PHP GD library) 
WP Media Optimizer (.webp) only works with Firefox and Chrome (at this time).
— SAFARI NOW SUPPORTS .WEBP images —
Now with LAZY LOAD FEATURE!
IMPORTANT: WPMOWEBP works only in the frontend side of your website (e.g. not in wp-admin/)
ABOVE THE FOLD Feature is not really “for dummies” but with some tests you can really improve your PAGE SPEED RATE! Hope you can appreciate this feature.
USAGE
Simply install and activate it, and your images will be optimized.
You can send a Feature Request from the Plugin Settings Page. 
I hope you will use this form so I can add new features to this simple and wonderfurl plugin!
You can enable the new Lazy Load Feature by making a little donation to the author, you will receive a life time token for this feature and future improvements.
HOW IT WORKS
When anyone access to a WordPress page, plugin check for images already converted to .webp. 
If one or more images have not been already converted, the plugin converts them immediately. 
Converted images are stored in a subfolder of wp-content folder: wp-content/wpmowebp
TROUBLESHOOTING
If WordPress go out of memory try to add 
define(‘WP_MEMORY_LIMIT’, ‘256M’); 
to your wp-config.php
Enjoy your new WordPress Plugin.

WP Media Optimizer (.webp)

Automatically optimize images in your Wordpress site by converting them to .webp extension

SpectrOM DB Cleanup vs WP Media Optimizer (.webp)