Display test
Monitor Test
This is the pass for a screen you just bought or are about to keep. It walks the solid colors, five grays, a ramp, a grid, and a moving bar. You look. The page does not grade the panel.
Colors change on their own. Click the color for the next one. Full screen is only the color. Space pauses. Esc leaves.
What the monitor test includes
Pixels, grays, a ramp, a grid, and motion
White through purple cover pixels. 75%, 50%, 25%, 10%, and 5% gray cover clouds and dark corners. The ramp is for banding, the grid is for soft lines, and the moving bar is for a trail. None of these is a score.
A speck has to stay put
If a mark stays on the same pixel when the color changes, it is not dust. Dust moves or disappears. The page does not count the marks.
A clean field in full screen
Full screen is only the color. Nothing else is drawn on it. The colors keep changing, and a click moves to the next one.
Links when one step looks wrong
Pixels, gray patches, and corner leak each have a longer test. This page is the short sitting, not the only tool.
A first look, not a lab report
People open a monitor test because a new screen arrived, or because a used one might be a mistake. They want to know if there is a bad pixel, a bright corner, or a cloudy gray before the return window closes. This page is that first sitting.
It is not a calibration. It does not read the EDID, the refresh rate the computer is using, or the panel’s response time. A browser can show a flat color. It cannot certify the monitor.
The order is deliberate. The solid colors, including cyan, magenta, and yellow, are for pixels. Black in a dim room is also for corner light. The five grays are for clouds and dark corners. The ramp, the grid, and the moving bar are looks, not measurements. If one step looks wrong, open the matching longer test instead of trusting this pass alone.
Nothing on this page is a score. If a dot, a bright corner, or a cloudy gray is obvious, that is what you saw. The return window is the seller’s rule, not a result from the browser.
How to use the monitor test
- Set the room and the picture mode. Sit where you will use the monitor. Use the monitor’s standard mode if a dynamic mode is making black look strange. Clean the glass once.
- Run every field. Press the badge on the color, or press F. The display is only that color, and the next color comes on its own. Click once to skip ahead. Esc leaves.
- Watch a speck across two colors. Click to the next color. A dead or stuck pixel stays on the same spot. Dust does not. Do this while you can still return the screen.
- Open the longer test if needed. Dead pixels go to the dead pixel test. Clouds go to the uniformity test. A bright corner goes to the backlight bleed test.
- Check the things this page skips. Refresh rate is in the system display settings. Ports, flicker, and speakers are on the computer, not on a color field. The new monitor guide lists those steps.
Why use this monitor test
One sitting, three jobs
The solid colors are the pixel pass. Black in a dim room is the corner-light pass. Five grays are the uniformity pass. The ramp, the grid, and the moving bar are extra looks. You can stop and open the longer page when one step looks wrong.
There is no score
The page shows colors. It does not tick a result, save a grade, or decide whether the panel should go back. If a defect is obvious, the return window is the seller’s rule.
The short pass is not the whole test
This pass now includes 75%, 50%, 25%, 10%, and 5% gray. It still skips the 2% gray on the bleed page. A bright corner on black should be checked there, from straight in front, before you decide.
Full screen is a clean field
Full screen is the color by itself. The sequence keeps moving, a click goes to the next color, and Esc leaves. A toolbar on the field would cover the pixels, the corner, or the gray.
What people use the monitor test for
The first half hour with a new screen
Walk the colors once before you install anything else. If white shows a dark dot, switch to the dead pixel test and stay on that color.
A quick check before a trip or a return deadline
This order covers a bad pixel, a bright corner, blotchy gray, banding on the ramp, soft lines on the grid, and a trail behind the moving bar. The written guide is the order. None of those looks is a lab number.
A second monitor beside the one you trust
Run the same fields on the new panel. The page fills the display that is showing the browser. It does not compare two panels with a number. Your eyes, on the same color, are the comparison.
What this sitting leaves out
Refresh rate, motion blur, input lag, speakers, and the cable are not in these colors. A frame counter in a browser is not the panel’s rated hertz. Check the system display settings for the refresh rate the computer is using.
What is not in this pass
Refresh rate, motion blur, and OLED burn-in are not measured here. A frame counter in a browser is not the panel’s rated hertz. A web page cannot declare a panel permanently burned in, and it cannot report a response time in milliseconds.
The ramp is not a gamma measurement, and the grid is not a sharpness score. The moving bar can show a trail behind it. That trail is not a response time in milliseconds. A colorimeter profile is still a different tool.
The solid colors are still there when you want one field and a download: black, white, red, green, and blue. The new monitor guide is the written order.
Frequently asked questions
Is this a full monitor calibration?
No. It is a visual pass for pixels, dark-scene light, and gray uniformity. It does not profile the panel or set the refresh rate.
Does a speck on one color mean a dead pixel?
Only if it stays on the same pixel when the color changes. Dust and a mark on the glass move or disappear. This page does not count the specks or decide a return for you.
How long should this take?
A few minutes if the panel looks even. Longer if you stop on a dot or a corner. Do it while you can still return the screen.
Which field do I use for dead pixels?
White, black, the primaries, cyan, magenta, yellow, orange, pink, and purple. If you find a dot, open the dead pixel test and hold the field where it shows.
Which field do I use for backlight bleed?
Black, in a dim room, from straight in front. Then use the backlight bleed test if the corner looks bright, so you can compare it with dark gray and with IPS glow.
Can the browser see my monitor’s hertz?
Not in any way you should treat as the panel’s rated refresh rate. On Windows, the display settings show the rate the PC is using. This page does not.
Why did buttons cover the bottom of the test?
Full screen on this page is only the color. There is no button bar on the field. Press Esc to leave, or click the color to move to the next one.
Does a perfect pass mean the monitor is fine?
It means these fields looked fine to you. It does not cover cables, flicker, speakers, or the refresh rate. Use the guide for the checks that are outside the browser.
What is included in this monitor test?
The solid colors, five grays from 75% down to 5%, a black-to-white ramp, a fine grid, and a moving bar. Dead pixels, backlight bleed, and uniformity each have a longer page if one step looks wrong.
Does the monitor test give a score?
No. The page did not measure the panel, and it does not turn what you saw into a pass or a fail. If you need a record, write down the color and the place yourself.
How is this different from the dead pixel test?
The dead pixel test holds one color so you can stare at a dot. This page keeps moving through the colors, the grays, the ramp, the grid, and the bar. Use the longer page when a dot shows up.
Can a browser monitor test see refresh rate?
No. The number in Windows or macOS display settings is the rate the computer is driving. Counting frames in a web page is not that number, and this page does not try. It also does not report response time in milliseconds.
Why do the buttons disappear in full screen?
Full screen is only the color, so the field reaches the edges. Click for the next color. Esc leaves. There is no button bar to bring back.
Should I trust this page alone before I keep a monitor?
Use it as the first pass, then open the matching test if something looks wrong, and read the seller’s return rule. The page cannot see ports, flicker from a bad cable, or a defect smaller than you can see.
