WebGPU Test
Check if your browser and GPU support WebGPU, inspect the adapter, and benchmark real compute on your device.
Not tested yet
Click the button and this page will ask your browser for a WebGPU adapter. The whole test runs on your device.
Compute benchmark
…
A WGSL compute shader over 4,194,304 data points. Indicative only: thermals, power mode and background apps move the number.
Your GPU Adapter
Supported Features
Adapter Limits
What is WebGPU?
WebGPU is the web standard that gives websites direct, modern access to your graphics processor. It replaces the aging WebGL with an API modelled on Metal, Vulkan and Direct3D 12, and unlike WebGL it is built for general-purpose GPU compute as well as drawing. That compute side is why WebGPU matters beyond games: photo and video editors, 3D tools, and on-device AI inference in the browser all ride on it.
Whether WebGPU works for you depends on three layers lining up: a browser that ships it, an operating system and GPU it can talk to, and current graphics drivers. Browser version lists alone cannot tell you, which is exactly why this test asks your machine directly and reports the real adapter, its feature set and its limits.
How to read your results
Adapter is the GPU (or software fallback) your browser can use. A fallback adapter means WebGPU works but renders in software, so expect slow results. Features are optional capabilities such as float32 filtering or timestamp queries that advanced apps check for before enabling effects. Limits are the ceilings, such as maximum texture size and buffer sizes, that decide how big a scene or model your device can handle. The benchmark then turns those paper specs into one practical number: how fast your GPU chews through a real compute shader.
Browser support at a glance
Chrome and Edge enable WebGPU by default on Windows, macOS and ChromeOS. Safari includes WebGPU from version 26. Firefox supports WebGPU on Windows, with its rollout to more platforms still in progress. On Linux, support depends heavily on your drivers and browser build. When in doubt, trust the test above over any chart, including this one: it interrogates the exact browser you are using right now.
How to use this test
- Click Run WebGPU Test. Detection takes a second and needs no permission prompt.
- Read the adapter card: your GPU name, vendor, and whether it is a hardware or fallback adapter.
- Optionally run the compute benchmark for a speed figure you can compare across your devices.
- Use Copy Full Report to save or share the complete result, handy for bug reports and support tickets.
Frequently Asked Questions
What is WebGPU?
WebGPU is the modern web standard that lets websites use your graphics processor directly for 3D rendering and heavy parallel computation. It is the successor to WebGL, designed for lower overhead and compute shaders, so browsers can run games, editors and AI workloads at near-native speed.
Which browsers support WebGPU?
Chrome and Edge ship WebGPU by default on Windows, macOS and ChromeOS. Safari added WebGPU in version 26, and Firefox supports it on Windows with rollout continuing on other platforms. Support also depends on your GPU and drivers, which is why this page tests your actual device instead of guessing from your browser name.
Why does the test say no adapter was found?
The browser may support the WebGPU API while no usable GPU adapter is exposed: outdated graphics drivers, a disabled GPU blocklist entry, a virtual machine without GPU passthrough, or remote-desktop sessions are common causes. Updating your graphics drivers and restarting the browser fixes most cases.
What does the benchmark measure?
The benchmark runs a real WGSL compute shader over four million data points on your GPU and times how long the work takes, giving an indicative operations-per-second figure. It is a quick comparison signal, not a laboratory measurement: thermals, background apps and power mode all affect the result.
Is any of my data uploaded?
No. Detection and benchmarking run entirely in your browser using the standard WebGPU API. Cubbbix receives nothing about your GPU unless you choose to copy the report and send it to someone yourself.
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