Renderer
A browser-provided GPU or graphics-backend label. Privacy settings may replace the exact model with a generic name.
Browser graphics support
WebGL Capability Check
Check WebGL 2 support, the browser GPU renderer, texture limits, viewport size, MSAA, and extension count without starting a heavy benchmark.
Local browser check
Check this device
Read WebGL support and graphics limits without starting a sustained GPU stress test.
Ready. No device data has been read yet.
- GPU renderer
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- WebGL version
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- Max texture size
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- Max viewport
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- MSAA samples
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- Extensions
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Renderer labels may be hidden or generalized by browser privacy settings.
Ready for a performance run? Open the volume shader test · All GPU tools
Reading the result
What the WebGL check tells you
The checker asks the browser to create a graphics context and reads values exposed by that context. The local Volume Shader benchmark uses WebGL 2. The remaining values describe limits, not real-world speed, so they help diagnose compatibility rather than rank GPUs.
Texture size
The largest square texture dimension the context reports. It is a capability ceiling, not a measure of memory capacity.
Viewport size
The maximum render viewport dimensions exposed by WebGL. Normal web tools usually render far below this limit.
Extensions
Optional graphics features available to the browser. A higher count does not automatically mean higher performance.
Troubleshooting
How to fix a failed WebGL 2 check
Start by updating the browser and enabling hardware acceleration. Restart the browser after changing graphics settings. If the check still fails, update the GPU driver and test outside remote desktop, a virtual machine, or a managed profile that may block hardware graphics.
- Update the browser.Use a current Chrome, Edge, Firefox, or Safari release.
- Enable hardware acceleration.Restart the browser after changing the setting.
- Update the graphics driver.Use the driver source recommended by the device or GPU vendor.
- Check device policy.School, workplace, virtual, and remote systems may restrict WebGL.
Compatibility vs performance
WebGL capability check vs a GPU benchmark
A WebGL capability check answers whether the browser can expose a graphics API and which limits it reports. A GPU benchmark answers how quickly the device completes a defined workload. Run this compatibility check first when the main test shows a black canvas, fails to start, or reports WebGL 2 as unavailable.
Capability values should not be converted into a performance score. A large maximum texture size does not prove high memory bandwidth, and a long extension list does not prove smooth frame delivery. For a benchmark comparison, open the exact same page and match browser, viewport, camera view, power, and temperature.
| API | What this page detects | Typical use |
|---|---|---|
| WebGL 1 | Fallback browser graphics support | Older or broadly compatible 3D content |
| WebGL 2 | Modern browser graphics support | Modern 3D and volume-shader workloads |
| WebGPU | Not tested by this checker | Newer compute and graphics applications |
When to use it
Use the WebGL 2 test before troubleshooting FPS
Run the checker when a browser 3D tool stays blank, reports an unsupported API, or behaves differently from the same device in another browser. The result separates basic compatibility from performance. If WebGL 2 works but FPS remains low, focus on power mode, temperature, background GPU activity, drivers, and workload settings.
Developers can also use the reported limits as a quick environment snapshot before reproducing a graphics bug. Record the browser version and operating system separately because this page intentionally avoids collecting or uploading a complete device fingerprint.
FAQ
WebGL capability questions
What does a WebGL capability check test?
It checks whether the browser can create a WebGL graphics context, then reads limits such as texture size, viewport size, multisample support, and available extensions.
Why does my browser show WebGL 1 instead of WebGL 2?
WebGL 2 may be disabled by old hardware, an outdated browser, a managed-device policy, a graphics driver issue, or software rendering. Update the browser and driver, then confirm that hardware acceleration is enabled.
Is the detected GPU name always exact?
No. Browsers may hide, shorten, or generalize the GPU renderer string for privacy and compatibility. The label is useful context, but it should not be treated as hardware verification.
Does the WebGL checker upload hardware information?
No. The check runs in the current page and does not submit the renderer or capability values. Reloading the page clears the displayed result.
Can WebGL support guarantee a good benchmark score?
No. WebGL 2 support means the browser can use the required API, not that the GPU is fast. Thermal state, power mode, drivers, browser scheduling, and the selected workload still affect performance.
What should I do if WebGL is unavailable?
Update the browser, enable hardware acceleration, restart it, and check whether device or organization policies block graphics APIs. Remote desktop and virtual machines may expose limited graphics support.
How do I check if WebGL is enabled?
Press Run WebGL check on this page. A successful result shows WebGL 2 or WebGL 1, the renderer label exposed by the browser, and several graphics limits; a failed result explains that no WebGL context could be created.
What are the requirements for WebGL 2?
WebGL 2 needs a compatible GPU, graphics driver, operating system, and current browser with hardware graphics access. A device can meet the hardware requirement while a browser setting, remote session, virtual machine, or organization policy still blocks the API.