Caffeine - Keep Awake

Caffeine - Keep Awake is a powerful Chrome extension designed to prevent your computer from entering sleep mode or activating the screensaver. It operates on two levels: "Display" to keep monitors from dimming, and "System" to stop the entire system from sleeping.

Key features include customizable awake durations ranging from 5 minutes to 24 hours, uninterrupted downloads by keeping the system awake during network activity, and an easy-to-use toolbar button to toggle the awake state. This extension is perfect for presentations, reading, or any situation where you need your screen active without changing your OS power settings.