Sajjad Hossain

This plugin allows you to restrict your site users from uploading files of certain types and control the maximum file upload size. Administrator can select the file types and file upload limit by user role. This plugin restricts users from uploading unwanted files using the WordPress media uploader.
It is very simple to use. You will be able give permissions role wise. To restore WordPress’s default selection, just deactivate the plugin.
Any issue? Please let me know (http://sajjadhossain.com/contact-me/).

WP Upload Restriction

This plugin allows you to control upload of files based on file types and sizes.

Ridhwan Ahsan

Ruivo User Switcher is a lightweight, fast, and user-friendly admin tool for switching users directly from the dashboard without page reload. It features a modern floating popup UI and secure session management.
Key Features: 
* Floating circular button (bottom-left) for quick access. 
* AJAX-powered user search with role filtering. 
* One-click switching to any user profile. 
* Secure “Switch Back” functionality to return to the original admin account. 
* Keyboard shortcut (Ctrl + Shift + S) to toggle the switcher. 
* Frontend support for switching while browsing the site. 
* Clean, modular code following WordPress coding standards.

Ruivo User Switcher

Allow administrators to quickly switch between users from the WordPress admin dashboard using a modular popup UI.

WP Upload Restriction vs Ruivo User Switcher