Frame Time Test - Check Browser Frame Timing
Check estimated browser frame time in milliseconds and identify unstable animation cadence.
Quick answer
Use this focused browser-based screen test before a return, repair, used-device purchase or setup decision. The page helps you inspect visible display behavior, but it cannot automatically certify panel hardware.
Method: ScreenTestKit generates the test surface in your browser. Results depend on visual inspection; the site does not read or diagnose physical panel hardware.
How to use this test
- Clean the display and set brightness to the level you normally use.
- Open the interactive test in a modern browser and use fullscreen mode when available.
- Repeat suspicious findings with at least one related pixel, color, motion, touch or screen information tool.
What to watch for
- Look for marks that stay fixed in the same physical position on the screen.
- Separate screen defects from dust, reflections, browser scaling and normal viewing-angle changes.
- Document repeatable findings with photos before return, warranty or repair conversations.
How to interpret results
Repeat first
A single pass can be misleading. Clean the panel and repeat the same check before deciding the screen is defective.
Compare related tools
Use the linked tests to narrow the issue to pixels, color uniformity, motion behavior, touch response or browser-reported display data.
Act during the return window
If a new device shows a repeatable visible issue, record it while return and warranty options are still available.
Frequently asked questions
Can this online test prove my display is defective?
No. It is a visual inspection aid. Use it to find and document symptoms, then confirm with the seller or manufacturer policy.
Do I need to install anything?
No. The test runs in the browser and uses fullscreen colors, motion, touch or screen information available to the browser.