WebGL GPU Test in Your Browser
Test your GPU through pure WebGL 2.0 in Chrome, Edge, Firefox or Safari. Verify hardware acceleration and know when WebGL stops.
Volume Shader BM is a pure WebGL 2.0 benchmark. Open it in Chrome, Edge, Firefox or Safari and you get a real GPU stress test — no native app, no driver, no sign-up. Below: which browser to pick, what to verify, and where WebGL stops.
Quick answer
- Use any browser that supports WebGL 2.0 (Chrome, Edge, Firefox, Safari ≥ 15).
- Verify GPU acceleration is active before you trust the score.
- Chrome / Edge:
chrome://gpu. Firefox:about:support. Safari: check Activity Monitor. - WebGL 2 is the right test for "everyday GPU compute" — WebGPU is newer but not yet universally supported.
Why WebGL 2.0?
WebGL 2.0 is supported across all major browsers and exposes enough of the GPU pipeline to run heavy fragment-shader workloads like raymarching. WebGPU offers more low-level control and could in theory be faster, but as of today browser support and driver maturity are still uneven. WebGL 2 hits the sweet spot of "always works, still stresses the GPU".
Chrome & Edge
- Open
chrome://gpu. "WebGL2: Hardware accelerated" must be green. - Under "Graphics Feature Status" everything important should be hardware accelerated.
- If you see "Software only" anywhere, see why the test is lagging.
Firefox
- Open
about:support→ Graphics. "Compositing" should be WebRender (not Basic). - If "WebGL 2 Driver Renderer" shows your GPU model — you're good.
Safari
- Safari 15+ enables WebGL 2 by default.
- Open Activity Monitor → GPU History during the test to confirm the GPU is doing work.
- On Mac, the Energy preference can park the dGPU. Plug in and switch off "Automatic graphics switching" for testing.
Where WebGL stops
This benchmark is great at measuring shader ALU throughput, which is what matters for raymarching, post-processing, GPGPU experiments and AI inference work that has to run in a browser. It is not a substitute for a native benchmark like 3DMark or a game's built-in test if you're trying to pick a graphics card for AAA gaming.
