Messenger Web App Upgrades is a Chrome extension designed to enhance the user experience on Messenger.com by introducing several practical features. With this tool, users can set a custom notification sound for incoming messages, allowing for a more personalized alert. Additionally, it offers the convenience of closing chats using the Escape key, and displays unread message badges, provided that the site is installed as a Progressive Web App (PWA). This functionality significantly improves usability for those who frequently use Messenger.

The installation process is straightforward: users simply need to install the extension, configure their settings to their liking, and refresh Messenger to see the changes. Notably, this extension prioritizes user privacy by storing uploaded audio data exclusively on-device and refraining from data collection or reporting to external services. Open-source under the GPLv3 license, Messenger Web App Upgrades is a valuable tool for enhancing the Messenger experience.