Online monitor test
Check dead pixels, colors, gradients, refresh behavior and motion blur on your display.
Start testTest without installing software
ACC64 runs directly in a modern web browser. You do not need to create an account or install additional software.
Follow the instructions shown in the tool. If the issue is intermittent, repeat the test several times.
Frequently asked questions
What does this test check?
The test set helps find dead or stuck pixels and evaluate color uniformity, gradients and visible motion blur.
Do I need to install anything?
No. The test runs directly in a supported web browser.
Does ACC64 save my test results?
No account is required. Hardware tests run locally in your browser unless a tool clearly requires a server connection, such as the Internet speed test.