Bright dots on screen: how to check for stuck pixels

A tiny bright dot can be hard to ignore when you spend hours reading code on a dark screen. It may be a stuck pixel, something on the screen surface, or an artifact from an app or graphics connection.

Check whether the mark stays in one physical spot, then decide if a brief pixel-fixing attempt is reasonable. The Display Test helps you compare colors, and the Stuck Pixel Fixer flashes colors quickly in an attempt to free a stuck pixel.

Check the bright dot

Open the Display Test and compare the mark against its color tests. Keep the Stuck Pixel Fixer ready, but do not start flashing yet.
Look at the same spot on several different screen colors. Note whether the dot stays bright, changes color, or disappears. Move the pointer away so it cannot be mistaken for the mark.
Take a screenshot and view it on another screen, or send it to another device. A physical panel defect will not appear in the screenshot. If the dot appears in the image on another screen, look for an app or graphics problem instead.
If you have an external monitor, change its input or connect it to another computer. On a monitor with an on-screen menu, check whether the dot is still visible over the menu. A mark that stays in the same panel location across inputs is more likely to be a display defect.
If the dot looks like a stuck pixel and you are comfortable with flashing colors, try the Stuck Pixel Fixer briefly. Its rapid flashing can be uncomfortable for some people. Stop if you feel eye strain or discomfort, and skip the attempt if flashing patterns are unsafe for you. See when pixel flashing may be unsafe.

What the result means

A bright point stays in the same spot on every color

A pinpoint that stays bright in exactly the same physical location is consistent with a stuck pixel or subpixel. A white point may have all three color elements lit, while a red, green, or blue point may indicate one subpixel is stuck on. If it remains visible over the monitor's own menu or with another input, the panel is the likely source.

The dot changes color or disappears on some backgrounds

A pixel defect can be easier to see against one color than another. Compare several solid colors before ruling it out. If the mark changes position with the image, appears only in one window, or moves when you move the pointer, it is more likely to be in the content, app, or pointer display than in the panel.

The dot appears in a screenshot viewed elsewhere

The screenshot contains the mark as part of the image, so it is not just a physical pixel on your monitor. Check the app, graphics settings, and any overlays or cursor effects. If the same mark appears in different apps and on multiple screens, graphics hardware or its driver may need further investigation.

The mark looks larger than a single sharp point

A smudge, dust, or a surface mark can resemble a bright pixel, especially on a dark editor background. A pixel is usually a very small, sharply defined point. If the mark changes when you view it from a different angle, inspect the surface carefully rather than pressing on the panel.

What to try next

Clean the screen gently. Turn the display off and use a clean, soft microfiber cloth. Do not press, rub hard, or use a sharp object. Pressure can damage the panel or create more marks.
Check the display mode. On Windows 11, open Settings › System › Display and check that the resolution is set to the recommended value. On a Mac, open System Settings › Displays and choose the default resolution for the display. This can help rule out scaling or rendering oddities, but it cannot repair a physical pixel.
Test another input or cable. For an external monitor, try another video input, cable, or computer. If the dot remains in the same panel location on every source, changing cables is unlikely to remove it, but this check helps separate a source problem from a panel problem.
Try the pixel fixer only once at first. If the mark appears to be a stuck pixel, use the Stuck Pixel Fixer for a short attempt and check the result again with the color tests. The flashing pattern may free some stuck pixels, but it cannot repair a damaged panel and may have no effect. Do not use it if you are sensitive to flashing patterns.
Update the graphics software if the mark is in the image. If the dot appears in screenshots or affects more than one display, restart the computer and check for graphics or system updates. On Windows 11, open Settings › Windows Update. On a Mac, open System Settings › General › Software Update.

When the display may need service

If the dot stays in one physical spot across color tests, apps, and inputs, and it does not appear in screenshots viewed elsewhere, treat it as a likely panel defect. A pixel fixer is not a reliable repair method, and pressing or massaging the screen can make the damage worse.

If the display is new or still under warranty, take a clear photo of the dot on a plain background and contact the seller or manufacturer before attempting more fixes. Pixel policies differ, so check the specific policy and the return deadline. For a monitor near the end of its return period, follow a careful inspection process such as checking a monitor before the warranty deadline.

Why bright dots stand out in a code editor

Dark themes make a bright pixel especially noticeable because the dot contrasts with the background. That does not mean the display is getting worse, but it can make long coding sessions distracting. If the spot is confirmed as a panel defect and service is not practical, a lighter editor theme or a different screen layout may make it less noticeable while you decide what to do.

The color tests and pixel-fixing attempt run in your browser; neither can confirm the monitor's repairability or replace a warranty inspection.