Adjust brightness in your display settings first

The fastest way to brighten your monitor is through your operating system's display settings, not the monitor's physical buttons. On Windows, right-click your desktop, select Display settings, scroll down to Brightness and color, and drag the brightness slider to the right. On Mac, open System Settings, go to Displays, and move the brightness slider up. Both take five seconds and don't require touching the monitor itself.

If you're using an external monitor connected to a laptop or desktop, the same process works — the operating system controls the overall brightness sent to the screen. This is your first stop because it's reversible, free, and affects everything on your display at once.

Key Takeaways

  • Windows and Mac both have brightness controls in display settings that work faster than monitor buttons and affect your entire screen.
  • Most monitors have physical brightness buttons on the bezel (usually near the power button) that let you adjust the display independently of your operating system.
  • Brightness and contrast are separate controls — raising contrast makes dark areas darker and light areas lighter, which can help visibility without washing out colors.
  • If your monitor is connected through USB-C or Thunderbolt, you may be able to adjust brightness through software without touching physical buttons.
  • Ambient light in your room affects how bright your monitor needs to be, so a setting that works at night may feel too dim during the day.

Use your monitor's physical buttons if OS settings aren't enough

If adjusting brightness in Windows or Mac doesn't give you the brightness you need, your monitor has its own brightness control. Look on the bezel (the plastic frame around the screen) for buttons, usually near the power button or along the bottom edge. Press the button labeled with a sun icon or a plus sign, or consult your monitor's manual to find which button controls brightness.

Pressing the button opens an on-screen menu showing brightness as a bar or percentage. Use the arrow buttons to move the slider right to brighten. This control works independently of your operating system, so you can set it once and leave it — the OS brightness setting and the monitor's brightness setting stack together to give you the final brightness level you see.

Some monitors use a single joystick button instead of separate arrow buttons. Push the joystick up or down to adjust brightness, left or right to navigate between different settings like contrast or color temperature.

Raise contrast to improve visibility without washing out color

Contrast controls how much difference there is between the darkest and lightest parts of your screen. Raising contrast makes shadows darker and highlights brighter, which can make text and images easier to see without making the overall screen feel washed out the way pure brightness sometimes does.

Access contrast through the same on-screen menu where you found brightness. Navigate to Contrast using the arrow buttons and increase it slightly — usually a 5 to 10 percent increase is noticeable. If you raise it too far, dark areas become pure black and lose detail, so adjust gradually and test with content you actually use, like documents or photos.

Contrast is especially useful if you're reading text on a white background or looking at spreadsheets. It sharpens the edge between the text and the background without making the entire screen brighter, which can reduce eye strain for some people.

Check your room's lighting and adjust for time of day

A monitor that looks perfectly bright at night will feel too dim during the day if sunlight is hitting your desk. Before you assume your monitor is broken or too dim, close your blinds or curtains and see if the brightness improves. If it does, your monitor is fine — you just need to adjust it when the ambient light changes.

Many people keep their monitor at a lower brightness setting during evening hours to reduce eye strain and blue light exposure. If you find yourself constantly adjusting brightness between morning and evening, consider using your operating system's built-in night light or blue light filter (called Night Light on Windows and Night Shift on Mac) rather than lowering brightness, since these tools warm the color temperature without making the screen dim.

Clean your monitor screen and check for dust on the panel

A dirty screen looks dimmer than it actually is. Dust, fingerprints, and smudges scatter light and reduce contrast. Power off your monitor, wait a minute for it to cool, then wipe the screen gently with a microfiber cloth — the same kind used for eyeglasses. Use only the cloth; don't spray liquid directly on the screen, as moisture can damage the panel.

Check the vents on the back and sides of your monitor as well. Dust buildup inside the monitor can cause it to overheat and dim itself automatically as a safety feature. If you see dust clogging the vents, use a can of compressed air to blow it out, holding the can upright and using short bursts from a few inches away.

Adjust color temperature if the screen looks too yellow or too blue

Sometimes a monitor looks dim because the color temperature is off — the screen may have a yellow or blue tint that makes it look darker or washed out. In your monitor's on-screen menu, look for Color Temperature or Color Mode. Most monitors offer presets like Cool, Neutral, and Warm.

Cool adds blue and makes the screen look brighter and crisper. Neutral is a middle ground. Warm adds yellow and is easier on the eyes during evening hours but can make the screen look dimmer. If your monitor looks too yellow, try switching to Cool mode — you may find the screen appears brighter without actually raising the brightness setting.

Some monitors let you adjust color temperature manually by changing the red, green, and blue values separately. Unless you're doing color-critical work like photo editing, the preset modes are usually sufficient.

Test with different content to confirm the brightness is right

Brightness that works for reading text may not work for watching video or editing photos. Open a few different types of content — a document, a web page, a photo, and a video — and check whether the brightness feels right for all of them. If you're squinting at text but video looks washed out, you may need to find a middle ground or accept that you'll adjust brightness depending on what you're doing.

If you're using your monitor for color-sensitive work like photo or video editing, brightness matters for accuracy. A monitor that's too bright will make you edit images that look too dark when viewed on other screens. If this is your use case, consider using a brightness meter or calibration tool to set your monitor to a standard level like 100 to 120 candelas per square meter (cd/m²), which is the industry standard for editing work.

Frequently Asked Questions

Why does my monitor get dimmer over time?

Monitor brightness naturally decreases as the backlight ages, usually after several years of use. This is normal wear and not a sign of failure. If your monitor is only a few months old and getting dimmer, the backlight may be failing and the monitor may be under warranty — contact the manufacturer.

Can I brighten my monitor if it's connected through USB-C?

Some USB-C monitors support brightness control through software or through the USB connection itself. Check your monitor's manual or the manufacturer's website for a control app. If no app exists, use the physical buttons on the monitor or your operating system's brightness settings.

Is it bad to run my monitor at maximum brightness all the time?

Running at maximum brightness uses more power and can shorten the monitor's lifespan slightly, but it won't cause when ready damage. If you find you need maximum brightness, your room may be too bright — try adjusting the lighting or closing blinds instead of maxing out the monitor.

Why is my monitor bright in the center but dim at the edges?

This is usually a sign of uneven backlight distribution, which is common in cheaper monitors. It's not fixable through settings. If the unevenness is severe and the monitor is new, contact the manufacturer about a replacement.

Does raising brightness reduce the lifespan of my monitor?

Higher brightness does put slightly more stress on the backlight and can reduce lifespan by months over several years, but the effect is small. Use a comfortable brightness level for your eyes rather than worrying about lifespan — a monitor that causes eye strain isn't worth preserving.