Sean Butze

Many users do not compress or resize their images before uploading them into a post, and oftentimes WordPress’s maximum upload limit of 2MB-10MB is still too large to prevent the insertion of photos that can signficantly slow down a website.
WP Image Size Limit allows an administrator to set a custom file size limit that is specific to image files and smaller than WordPress’s general file size limit.
This is especially useful when you need to put tighter restriction on image uploads but want to preserve the ability to upload larger files of other formats (audio, video, etc.).

WP Image Size Limit

Just what I needed to tamp down those designers who think it's okay to use 20MB images!

Brilliant

Adds a new setting under Settings -> Media where an admin can set a maximum upload file size for image files.

alim511

Before using this plugin, please make sure that you BACKUP ‘upload’ folder. This is the most important step! 
Also do not forget Rescan Images every time you change settings 
 
 
Please note that ‘max_execution_time’ PHP setting should be minimum 90 seconds for the correct script work. 

AMW Clear Upload Folder will compare images entries from the database with filenames in upload directory. 
All files that are missing in the database will be removed from the filesystem.
<h3>HOW TO USE</h3>
<ol>
<li>Install and activate plugin</li>
<li>Go to the ‘Settings’ tab and choose needed settings. Please note everytime you make changes to the settings, 
you need to rescan images on the ‘List of files’ tab</li>
<li>Go to ‘List of folders’ tab under plugin page and choose folders that you DO NOT WANT to clean</li>
<li>After this you can navigate to ‘Main’ tab and click ‘Run cleaner’ button</li>
<li>That’s all plugin will start cleaning files</li>
</ol>
If you think, that you found a bug in our AMW Clear Upload Folder plugin or have any question contact us at alimov.dmitriy.me[at]gmail.com
<h3>DISCLAIMER</h3>
NO WARRANTY, USE IT AT YOUR OWN RISK!

AMW Clear Upload Folder

This plugin works exactly as promised, really helpful for my website!

Awesome Plugin!

Removes unused files from the 'uploads' folder

WP Image Size Limit vs AMW Clear Upload Folder