GPU Tools
Beyond the stress tests, these utilities help you understand your graphics hardware and display. Everything runs locally in your browser; nothing is uploaded unless you choose to share a result.
About this page
Each tool answers one question and tells you plainly what it cannot measure. Some read what your browser reports (GPU info, HDR check), some time something on your device (refresh rate, input latency, memory, storage), and a few are visual checks you judge with your own eyes (screen and colour tests). The network test is the only one that talks to this site, and it only moves random bytes.
All tools
- GPU info and capabilities: what your browser reports about the graphics card.
- Refresh rate and frame pacing: your real display rate and frame consistency.
- Screen test: dead pixels, backlight bleed and banding.
- Input latency test: the browser’s share of input delay, plus reaction time.
- Ghosting and motion blur test: moving shapes to spot trails and overshoot.
- Colour, gradient and gamma test: banding, shadow detail and colour blocks.
- HDR and wide colour check: what the display reports.
- Memory bandwidth test: copy, read and write speed in the browser.
- Browser storage speed test: the browser’s storage layer.
- Network speed test: the path between you and this site.
- CPU stress test: sustained CPU throughput on all threads.
- Game FPS estimator: a ballpark from your class score.
- Trends and health reminders: your history over time.
- Live sensors: optional desktop companion for temperatures and clocks.
- My results: your saved runs, kept in this browser.
How to read the results
Start with GPU info to confirm the browser sees your real graphics card rather than a software renderer. Then run the stress tests from the tests page, and use the other tools to look into anything odd: a low refresh rate, a slow-feeling screen or a score that dropped. Every tool page has its own section on how to read its result.
Frequently asked questions
Do these tools upload anything?
No. They run in your browser. The network test downloads and uploads random bytes to this site to time the connection, and results are only shared if you tick the consent box after a benchmark and the site owner has turned sharing on.
Do I need to install anything?
No. Any current browser on Windows, macOS, Linux, ChromeOS, Android or iOS works. The optional desktop companion is the only download and is not needed for any tool.
Why can a browser not read my GPU temperature?
Web pages are not allowed to read hardware sensors. The optional desktop companion can show temperatures and clocks if you install it on your own computer.
Which tool should I try first?
GPU info. It shows what your browser reports and whether hardware acceleration is on, which explains most slow or failing tests.
Are the results comparable with other programs?
Not directly. These tools measure what a browser can see, so use them to compare your own runs over time or before and after a change.