“A truly great tool! Helped me find a few pixel issues I never noticed before.”
Daniel K.PC Enthusiast
The free display testing tool for every screen
Test your screen.
See every detail.
A simple, powerful way to check your monitor,
TV, laptop, or mobile device. Run display tests,
find issues, and make sure your screen looks its best.
Works onany device
Free, no installationNo personal data
Fast, reliableand easy to use
Popular tests
Everything you need
to check your display.
Choose from essential screen tests to detect common issues,
calibrate your display, and ensure the best visual experience.
Screen Tester
Check dead pixels, stuck pixels, and screen uniformity.
Refresh Rate Test
Check refresh rate, frame timing, and motion smoothness.
Monitor Color Calibration
Compare white balance, color patches, and skin tones.
Sharpness & Geometry
Compare fine lines, checkerboards, and image proportions.
Backlight Bleed Test
Inspect dark-screen uniformity with black and gray fields.
Test Patterns
Compare color bars, grayscale steps, and smooth gradients.
How it works
Get started in
three simple steps.
Launch a test, follow the on-screen instructions,
and check your display in seconds.
Choose a test
Pick a check for your display from our available browser tools.
View the test
Run the test fullscreen in your browser.
Check your display
Look for issues and make sure everything looks right.
What people say
Trusted by thousands
of users worldwide.
A clearer view, from our community.
“Simple, fast and reliable. I use it before buying a monitor and it gives me confidence.”
Sophia L.Graphic Designer
“Works perfectly on all my devices. Clean interface and very easy to use.”
James T.IT Professional
FAQ
Frequently asked
questions.
Everything you need to know
about using My Screen Tester.
Is My Screen Tester really free to use?
Yes. The available display checks are free to use, with no account, subscription, or test-result upload.
Do I need to download anything?
No downloads or installation are needed. Open a test in your browser, choose a reference, and use the fullscreen control when you are ready.
Which devices and browsers are supported?
Use a modern browser on your monitor, laptop, tablet, or phone. Fullscreen availability varies by browser, especially on mobile devices; visible controls remain available.
What should I look for when doing a test?
Check for dots that stay dark or fixed to one color, uneven brightness, and tinted patches. Clean the screen first and compare several colors. Use a dark room for backlight bleed and normal lighting for other checks.
Can I use this tool to calibrate my monitor?
Our color calibration page provides visual references for white balance and color. A browser check cannot measure physical color accuracy or replace a hardware colorimeter.
