Stuck pixel returns after appearing to improve

You ran a flashing pattern, and the colored dot seemed to disappear. Now it is back. That can mean the pixel is intermittent, but it can also mean the test only made the defect harder to see against that particular image.

Retest the spot on several colors before deciding what to do. The Stuck Pixel Fixer can try to free a stuck pixel with a fast flashing pattern, while the Display Test helps you inspect the screen on different colors. Neither tool can guarantee a repair.

Retest the pixel

Open the Display Test on the screen with the problem. Look at the exact spot on different solid colors, and note whether it stays in the same place.
Check that spot again after refreshing the page or restarting the device. If it is an external monitor, also check another app or input source if one is available.
Open the Stuck Pixel Fixer. Use its flashing pattern and timer for a short attempt, then stop and inspect the spot again on the same colors.
Repeat the color check after a few minutes, and once more after the next restart. Compare the spot's position and appearance rather than relying on memory.

Fast flashing can be uncomfortable and may pose a risk for people with photosensitive conditions. Do not stare at the pattern, stop if you feel discomfort, and do not leave it running unattended.

What the result means

The same colored dot stays in the same place

A red, green, blue, or bright dot that remains fixed across different images is consistent with a stuck subpixel. A screen pixel is made of smaller red, green, and blue elements. If one element stays lit or does not respond as expected, the pixel can look like a colored speck. The flashing pattern may not change it, and repeated attempts are not a reliable repair.

The dot is dark on every color

A dark spot that does not change with the test colors may be a dead pixel or a problem with more than one subpixel. A browser test cannot tell you exactly which component failed. If the spot stays in place after a restart and appears on more than one source, treat it as a likely screen defect.

The spot disappears on some colors

A stuck subpixel can blend into a background that has a similar color, so disappearing from view is not proof that it recovered. Compare the same location on several different colors and inspect it again later. If it is still visible on some colors, the underlying issue has not necessarily changed.

The mark moves, changes shape, or does not appear in a screenshot

A physical pixel defect stays at one panel location. A mark that moves with the image, changes when you switch apps, or appears in a screenshot viewed on another device may instead come from the image, software, or graphics output. A physical panel defect usually is not captured in a screenshot because the screenshot records the image before it appears on the screen.

The pixel looks better, then returns

The pixel may be intermittent, or it may have looked less noticeable under a different color or brightness. One successful-looking moment does not confirm a lasting fix. If the spot returns in the same place on the same color checks, record that result and consider the screen unrepaired.

What to do next

Check the screen at its normal resolution. A scaled or unusual resolution can make edges and small details look different, although it does not repair a panel defect. On Windows 11, open Settings › System › Display and check Display resolution. On macOS, open System Settings › Displays and select the display's normal resolution.
Rule out the image source. Open a different page or app, and, for an external monitor, try another cable or device input. If the dot stays at exactly the same panel location, the source is less likely to be responsible.
Try the flashing pattern once more, briefly. Use the Stuck Pixel Fixer only if the flashing is comfortable for you. Stop if the pixel does not change, if you feel discomfort, or if the pattern bothers anyone nearby.
Do not press or rub the screen. Pressure can damage the display or create new marks. Avoid tapping the panel, heating it, or using instructions that call for force.
Keep a record of the defect. Photograph the spot on a plain color at a distance that shows where it is on the screen. Note the date and whether it appears on different colors, after a restart, and with another source.
Check your warranty or return options. Look up the screen maker's or device maker's policy for pixel defects. Policies can set limits on how many defective pixels qualify for repair or replacement.

When the screen may need repair

If the mark stays at the same spot across different colors, apps, restarts, and sources, the panel is the likely cause. A browser tool cannot repair a damaged pixel, and a flashing pattern is only an attempt that sometimes helps with a stuck pixel. If the device is new or under warranty, contact the seller or manufacturer before trying anything that could affect coverage. For an older device, compare the cost of a screen repair with replacement, especially if there are several defects or other signs of display damage.

A stuck pixel is not the same as image retention

Image retention is a faint trace of an earlier image that can remain temporarily after the content changes. It usually covers an area or resembles part of the previous image, rather than appearing as one fixed colored dot. Leave the screen showing varied content and check again later. On OLED displays, persistent image retention can also indicate wear, so avoid leaving a bright, static picture on the screen for long periods.

If the defect appears on a phone or tablet, repeat the color check on that device's own screen, since testing a screenshot on a computer cannot reveal a physical pixel problem on the mobile display.