PixelRecovery
Free · No install · Runs on your device

Dead pixel test and stuck pixel fixer

Find out in under a minute whether that dot on your screen is dead or just stuck — then run a high-frequency repair pattern over it. Nothing is uploaded and nothing is installed.

Start the dead pixel test Open the stuck pixel fixer

Works on monitors, laptops, phones, tablets, TVs and projectors.

  • Runs 100% in your browser
  • No install or account
  • Free, no paywall
  • Keyboard and touch ready
The toolkit

Diagnose first. Repair second.

Start with a flat color test. If the dot is bright, move to the fixer. If the whole panel looks wrong — banding, blur, uneven light — run the full monitor check.

Dead pixel test

Full-screen solid colors that expose dead, stuck and hot pixels. Nine colors, arrow-key cycling, works on any device.

Run the test Most used

Stuck pixel fixer

A draggable square that cycles colors at up to 60 Hz over the faulty pixel. Most stuck pixels respond within 10 to 30 minutes.

Open the fixer

Monitor test

Gradients, banding, uniformity, backlight bleed, ghosting, text clarity and refresh rate. The full check-up in one page.

Test the monitor
Method

How to test a screen without fooling yourself

Most false alarms are dust, fingerprints or a browser running at the wrong zoom level. Four steps remove both.

  1. Clean the panel

    A microfibre cloth and a drop of distilled water. Dust looks exactly like a dead pixel until you wipe it.

  2. Use native resolution

    Set the display to its native resolution and 100% zoom. Scaled output can hide defects or invent them.

  3. Cycle every color

    Black reveals stuck pixels. White reveals dead ones. Red, green and blue isolate a single sub-pixel.

  4. Mark the spot

    Note where the dot sits. You will need to place the fixer square exactly over it.

Diagnosis

Dead or stuck? The difference decides the outcome

They look similar on a dark screen and behave very differently under repair.

Dead pixel

Permanently off. It stays black on white, red, green and blue. Usually a failed transistor, and rarely recoverable with software.

  • Always black
  • Emits no light at all
  • A warranty case, not a repair

Stuck pixel

Frozen on one color. It shows as a bright red, green, blue or white dot on dark scenes and can often be exercised back to life.

  • Bright red, green, blue or white
  • Still receives power
  • Good odds with the fixer
How it works

Why a browser can revive a pixel

An LCD sub-pixel is a tiny liquid-crystal shutter. When it stays in one state for a long time, the crystal can lock up. Rapidly changing the voltage across it — exactly what a fast color cycle does — can free it again. It is not magic and it does not work on every panel, but it costs nothing to try before a warranty claim.

Stuck pixel
OLED panels work differently: every pixel emits its own light. The fixer is less likely to help there, and static content is the real enemy.
Runs 100% in your browser

Questions people ask before trying this

Short answers, no hype.

Can a dead pixel be fixed?

A truly dead pixel — one that stays black on every background — is a hardware failure and cannot be fixed with software. A stuck pixel, which stays lit in one color, can sometimes be revived by cycling it rapidly. That is what the fixer does.

How long should I run the stuck pixel fixer?

Twenty minutes is a reasonable first attempt. If nothing changes, run it for another twenty with a different pattern. Most successes happen within the first hour. Beyond that, the odds drop sharply and it is time to consider warranty.

Is a stuck pixel the same as a dead pixel?

No. A stuck pixel still receives power and is frozen on one color, usually red, green, blue or white. A dead pixel receives no power and stays black. Stuck pixels are the ones with a realiztic chance of repair.

Can the fixer damage my screen?

The fixer only changes colors on the display, which is what the panel does during normal use. It does not touch the hardware, overdrive the backlight or write anything to the panel. The real risk is discomfort from flashing light, so take breaks and avoid it if you are photosensitive.

FAQ

Start with the diagnosis

One minute to know what you are dealing with. Ten minutes to try the cheapest fix available.

Run the dead pixel test