Penumbra - Dark & Light Switcher

How to install Open in Chrome Web Store

CRX ID

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Status

Description from extension meta

Shift any webpage between dark and light appearance with intelligent color analysis.

Image from store

Description from store

Penumbra — Dark Mode Done Right 🌑

Stop blinding yourself at night. Penumbra makes every website dark — beautifully, instantly, and automatically.

🌙 One-Click Dark
Flip any site to dark mode. Clean, readable, comfortable.

⏰ Auto Scheduling
Dark at night, light during the day. Syncs with system preferences or your custom schedule.

🎨 Customize Everything
Brightness, contrast, warmth, sepia — your call. Per-site settings included.

📋 Whitelist
Skip sites that already look good in dark mode.

🖼️ Media Preserved
Images and videos stay in original colors. Only backgrounds adapt.

👁️ Eye Protection
Less blue light. Softer contrast. Made for late-night sessions.

⚡ Fast
No white flash. No slowdown. Works instantly.

Get Penumbra and take the strain off your eyes.

Extension Actions