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LCD Screen Test

Run a free in-browser LCD screen test in under a minute. Pick a color tile - red, green, blue, black, white, or yellow - and the page paints that solid fill across the full viewport so a stuck pixel, a dead pixel, or backlight bleed stands out against a uniform field. No install, no account, no upload.

Last reviewed: 2026-06-29

PropertyValue
FormatOnline tool, no install
SpeedBrowser-side; output in seconds
PrivacyFiles stay on-device
Implementing toolhttps://freetoolonline.com/device-test-tools/lcd-test.html

Below the color tiles the page reports three live numbers about your display: the live viewport, the screen resolution the operating system advertises, and the native screen resolution that resolution multiplied by your device pixel ratio. Confirm the native number matches the spec sheet for your laptop or monitor before flagging a suspect dot, because on a hi-DPI panel one CSS pixel sits in front of several physical sub-pixels, and a stuck sub-pixel can hide between them. The readout refreshes on each load, so a fresh check is one reload away.

If you need to determine whether your display is an LED or LCD panel first (the distinction changes which color pattern is most revealing), see LED test vs LCD test - which applies to your screen. The same test is available in Indonesian at tes LCD.

Reviewed by the Free Tool Online editorial team · Tested in the current versions of Chrome, Firefox, Safari, and Edge before publishing. No account is needed to use any tool. Report a bug - we triage within 72 hours. · Last refreshed April 2026.

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  • Ten-plus years of web tooling. The freetoolonline editorial team has shipped browser-based utilities since 2015. The goal has never changed: get you to a working output fast, without an install.
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  • LCD Test - Test your LCD screen for dead pixels, stuck pixels, and backlight bleed.
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Tags: #device-test, #guide, #lcd, #screen, #test

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