Black Screensaver Online

✓ 免费在线纯黑屏保，一键黑屏

A completely black fullscreen page — no buttons, no text, no animation. Free, opens straight to black, no setup needed.

• ⬛ Instant pure blackOpens to a full-screen, edge-to-edge black page with nothing else on it.
• 🔋 Saves OLED batteryPure black pixels on OLED/AMOLED screens draw almost no power.
• 🕶️ Dims your screenHandy as a quick blackout for a dark room or to cut glare.
• 🔍 Dead pixel checkA flat black background makes stuck or dead pixels easy to spot.

完整指南、教程与常见问题 →