Test My Screen
Professional Display Quality Assessment Tool
About this Test
Introduction
This tool helps you assess the quality and performance of your display through a series of visual tests.
For best results, run these tests in a controlled lighting environment and follow the instructions for each test carefully.
Test Descriptions
Solid Color Test
Displays solid colors to check for dead pixels and color uniformity.
Color & Gradient Test
Shows color gradients to check for smooth transitions and banding.
Contrast & Brightness
Tests your screen’s ability to display different brightness levels and contrast.
Sharpness & Clarity
Checks text rendering and fine line clarity.
Response Time
Measures motion blur and ghosting with moving objects.
Grid & Geometry
Checks for geometric distortion with grid patterns.
Plus additional tests for interference, flicker, viewing angle, refresh rate, and touch screen capabilities.
Screen Care Tips
Clean your screen regularly with a microfiber cloth.
Avoid using harsh chemicals on the screen surface.
Adjust brightness to comfortable levels to reduce eye strain.
Take regular breaks to rest your eyes when using screens for extended periods.
FAQ
Q: Can this tool fix my screen issues?
A: No, this tool only helps identify issues. It cannot repair hardware defects.
Q: Why do some tests look different on different devices?
A: Display technologies vary widely, and each has different characteristics that affect how tests appear.
Q: What should I do if I find dead pixels?
A: Check your device warranty. Some manufacturers will replace screens with a certain number of dead pixels.
Disclaimer
This tool is for assessment purposes only and cannot repair screen defects. Results may vary based on your device and browser.
About This Screen Test & User Guide
Welcome to your all-in-one online screen test tool! This utility is designed to help you quickly and easily assess the quality and performance of your display. Whether you’re setting up a new monitor, troubleshooting issues, or just curious about your screen’s health, this guide will walk you through each step.
When you’re ready, simply press the “Start Test” button to enter a full-screen, immersive testing environment. You can navigate through the tests by clicking your mouse, using your scroll wheel, or swiping on a touch device.
1. Solid Color Tests (The Foundation)
This is the first and most fundamental part of the monitor test. We will cycle through several full-screen, solid colors.
- What to Look For:
- Dead Pixel Check: On the white, red, green, and blue screens, look for tiny black dots. These are “dead pixels” that are permanently off. On the black screen test, look for pixels that are stuck on a bright color—these are “stuck pixels.”
- Uniformity & Backlight Bleed: On the black screen, check the edges of your monitor for any “glowing” or light leakage. This is called backlight bleed. On all colors, especially gray, look for uneven patches, cloudiness, or “dirty screen effect” (DSE), which indicates poor uniformity.
How to Do It: Simply click or scroll to cycle through white, black, red, green, blue, and gray. Take your time to scan the entire screen on each color.
2. Color & Gradient Tests
This is where we perform a monitor color test to check your screen’s ability to display smooth transitions and a rich color spectrum.
- What to Look For:
- Color Banding: In the gradient tests (like the black-to-white or rainbow gradient), observe the transition. It should be perfectly smooth. If you see distinct, step-like bands of color instead of a seamless blend, your monitor has color banding issues.
- Color Accuracy: The rainbow gradient gives you a quick impression of your screen’s color vibrancy. Colors should look rich and distinct.
How to Do It: The test will display gradients. Look closely at the areas where colors merge.
3. Contrast & Brightness Tests
This test checks your monitor’s ability to distinguish between very dark and very bright shades, which is crucial for seeing detail in images and videos.
- What to Look For:
- Grayscale Steps: In the grayscale bar, you should be able to distinguish each individual shade of gray from its neighbor, from the darkest to the lightest.
- Detail in Whites & Blacks: In the patterns with faint numbers on white or black backgrounds, a good monitor will allow you to see even the most subtle variations. If you can’t see the numbers near pure white or pure black, your contrast or brightness settings may need adjustment.
How to Do It: Observe the patterns and see how many distinct shades or numbers you can clearly identify.
4. Sharpness & Text Clarity Test
Is your text crisp and are fine lines sharp? This test will show you.
- What to Look For:
- Text Readability: Text at various sizes should be clear and easy to read, with no fuzziness, ghosting, or unnatural thickness around the letters.
- Fine Lines: The grid of single-pixel lines should appear perfectly sharp. If the lines look blurry, wavy, or merge together, it could indicate a resolution or sharpness setting issue.
How to Do It: Read the sample text and examine the fine line patterns closely.
5. Response Time & Motion Test
This test is for checking motion performance, which is especially important for gaming and watching fast-paced videos.
- What to Look For:
- Ghosting / Motion Blur: As the square object moves across the screen, look for a trailing “ghost” or a blurry trail behind it. Faster response times result in less ghosting and clearer motion. The test will cycle through slow, medium, and fast speeds to make this more apparent.
- Inverse Ghosting (Corona): In some cases, you might see a bright or dark outline leading the moving object.
How to Do It: Follow the moving square with your eyes and note any motion artifacts.
6. Geometry & Distortion Test
This test puts up a simple grid to check for physical screen distortion.
- What to Look For:
- All lines in the grid should be perfectly straight and parallel. If the lines appear to curve inwards (pincushion distortion) or outwards (barrel distortion), it indicates a geometry issue with the monitor itself.
How to Do It: Just look at the grid. The lines should form perfect squares across the entire screen.
7. Viewing Angle Test
How does your screen look when you’re not sitting directly in front of it?
- What to Look For:
- Color Shift: As you move your head up, down, left, and right, do the colors on the screen change? For example, does white turn yellowish or does blue shift to purple?
- Contrast/Brightness Loss: Does the screen become significantly dimmer or do the details in dark areas disappear when viewed from an angle? Good monitors maintain their image quality across a wide range of viewing angles.
How to Do It: This test will display a static image. Physically move your viewing position and observe the changes. When you are finished, click the “Continue Test” button on the screen.
8. Touch Screen Tests (For Touch-Enabled Devices)
If you are on a tablet, laptop, or monitor with touch capabilities, this series of tests will verify its functionality.
- What to Look For:
- Single-Touch Drawing: Your finger’s path should be tracked smoothly and accurately, with no breaks or jumps in the line.
- Multi-Touch Recognition: The test should accurately detect and display all your fingers on the screen at once.
- Touch Grid Accuracy: Each grid cell you touch should light up correctly, ensuring there are no “dead zones” on your touch screen.
How to Do It: Follow the on-screen instructions for each part. You will need to click a “Done with this part” button to move between touch tests.
Disclaimer: This screen test is a helpful diagnostic tool, but it is not a professional calibration instrument. The results are for your reference and can help you identify potential issues with your monitor. It cannot fix screen defects.
Enjoy the test