WooMEC

The Image Upload Size Limit Plugin is a lightweight and efficient solution for WordPress users who want to control the maximum file size for uploaded images. Large image uploads can slow down your site, consume excessive server resources, and impact SEO. This plugin prevents oversized image uploads by allowing administrators to set a custom file size limit, ensuring an optimized and smooth media management experience.
Key Features:
<ul>
<li>Set a custom maximum file size for image uploads.</li>
<li>Prevent users from uploading excessively large images.</li>
<li>Works with all WordPress versions and themes.</li>
<li>No need to modify server files (php.ini, .htaccess, etc.).</li>
<li>Easy configuration via the WordPress dashboard.</li>
<li>Improves website speed and performance.</li>
<li>Helps in SEO by reducing page load time.</li>
</ul>

Image Upload Size Limit

The plugin allows limiting the uploaded image file size with a configurable value, helping to optimize performance and prevent server overload.

Den Media

<h4>English</h4>
This little plugin allows you to specify a size limit upload folder.
To limit the size of the upload folder, go to the settings page (as in the screenshot), scroll to “Upload Dir Limit” and set the desired value in megabytes.
To disable the limit, leave this field blank or disable the plugin.
<h4>Русский</h4>
Данный маленький плагин позволяет ограничить размер папки upload.
Для включения ограничения папки upload, перейдите в “Настроки → Основные”, подчти в самом низу найдите поле “Upload Dir Limit” а укажите значение ограничения в мегабайтах.
Для диактивации ограничения, оставьте поле пустым, либо отключите плагин.

hiWeb Upload Dir Limit

Nice and simple...

This little plugin allows you to specify a size limit upload folder.

Image Upload Size Limit vs hiWeb Upload Dir Limit