Black Screensaver Online
A completely black fullscreen page — no buttons, no text, no animation. Free, opens straight to black, no setup needed.
無料で使う →
機能
Instant pure black
Opens to a full-screen, edge-to-edge black page with nothing else on it.
Saves OLED battery
Pure black pixels on OLED/AMOLED screens draw almost no power.
Dims your screen
Handy as a quick blackout for a dark room or to cut glare.
Dead pixel check
A flat black background makes stuck or dead pixels easy to spot.
Zero distractions
No settings, no buttons, no sound — nothing to interact with.
Keeps your screen awake
Uses the Wake Lock API so the screen won't auto-lock while it's open.
使い方
1
Open the page
The screen turns fully black immediately, no clicks needed.
2
Wait for the hint to fade
A faint reminder of how to exit appears briefly, then disappears.
3
Tap ✕ to exit
Tap the close button in the top-right corner, or use your browser's back button.
よくある質問
Is this black screensaver free?
Yes, completely free with no ads or account required.
Will it actually save battery on my phone?
On OLED/AMOLED screens, pure black pixels are turned off, so yes — it can noticeably reduce power draw.
Does it have any settings or sounds?
No — by design there are no settings, buttons, or sounds. It's just a black screen.
Does it work on mobile?
Yes, it fills the screen edge-to-edge on phones and tablets, including the notch area.