Screen Issues
Free screen testing for dead pixels and display issues
Screen Issues is a free browser-based utility for testing displays and diagnosing dead pixels, lines, color issues, and flickering without downloads.
Features
Test monitors quickly in your browser and identify common display problems.
Use Cases
Home users checking a new monitor; anyone diagnosing dead pixels, lines, color issues, or flickering.
Comments
Running the full set of tests in the browser with no install is handy, especially when checking a used monitor before buying it. The flicker test is a nice touch since that's harder to spot than a dead pixel. Do you have a guided mode that cycles through solid colors fullscreen automatically, so it works well on a phone or laptop too?
Really handy for checking a new monitor without installing anything — running dead-pixel, color and flicker tests straight from the browser covers the checks most people actually need when unboxing a display. A guided step-by-step mode that walks you through each test would make it even better for non-technical users, but as a quick diagnostic tool this does the job well.
This is the kind of tool you don't think about until you need it — unboxing a new monitor or buying a used one and wanting to check for dead pixels before the return window closes. Running everything in the browser with no install is exactly right for a diagnostic utility. One suggestion: a guided mode that walks first-time users through which test catches which symptom (solid colors for dead pixels, gradients for banding) would make this even more approachable for non-technical folks.
A few comments here ask for a mode that cycles through solid colours, but your homepage says the test already auto-cycles through 6 of them. Worth putting that line in this description too. What I didn't expect is the 126 guides behind the tool. One idea: when someone stops on a colour because they've spotted something, link straight to the matching guide (a black dot on white goes to the dead pixel page, a glow on black to bright spots), so the test ends on a diagnosis rather than a list of topics.
Splitting the guides by symptom (white spots, green lines, flickering) is smart, because that's how people describe the problem when they search. One idea: let each guide open the test with the most useful color already selected, for example black for bright spots and white for dead pixels. That way someone landing from search gets the check in one tap.
As someone who builds browser-based diagnostic tools, I appreciate how you've made this zero-friction — no install is exactly right for a quick monitor check. One thought: for users filing a warranty claim, a way to capture or export the test results (even a simple summary they could screenshot) would make it easier to document the issue for the manufacturer. Have you considered that use case?
Premium Products
Sponsors
Buy
Comments
Running the full set of tests in the browser with no install is handy, especially when checking a used monitor before buying it. The flicker test is a nice touch since that's harder to spot than a dead pixel. Do you have a guided mode that cycles through solid colors fullscreen automatically, so it works well on a phone or laptop too?
Really handy for checking a new monitor without installing anything — running dead-pixel, color and flicker tests straight from the browser covers the checks most people actually need when unboxing a display. A guided step-by-step mode that walks you through each test would make it even better for non-technical users, but as a quick diagnostic tool this does the job well.
This is the kind of tool you don't think about until you need it — unboxing a new monitor or buying a used one and wanting to check for dead pixels before the return window closes. Running everything in the browser with no install is exactly right for a diagnostic utility. One suggestion: a guided mode that walks first-time users through which test catches which symptom (solid colors for dead pixels, gradients for banding) would make this even more approachable for non-technical folks.
A few comments here ask for a mode that cycles through solid colours, but your homepage says the test already auto-cycles through 6 of them. Worth putting that line in this description too. What I didn't expect is the 126 guides behind the tool. One idea: when someone stops on a colour because they've spotted something, link straight to the matching guide (a black dot on white goes to the dead pixel page, a glow on black to bright spots), so the test ends on a diagnosis rather than a list of topics.
Splitting the guides by symptom (white spots, green lines, flickering) is smart, because that's how people describe the problem when they search. One idea: let each guide open the test with the most useful color already selected, for example black for bright spots and white for dead pixels. That way someone landing from search gets the check in one tap.
As someone who builds browser-based diagnostic tools, I appreciate how you've made this zero-friction — no install is exactly right for a quick monitor check. One thought: for users filing a warranty claim, a way to capture or export the test results (even a simple summary they could screenshot) would make it easier to document the issue for the manufacturer. Have you considered that use case?
Premium Products
New to Fazier?
Find your next favorite product or submit your own. Made by @FalakDigital.
Copyright ©2026. All Rights Reserved