How do I test if WebGPU is working in my browser?

Open this page in Chrome, Edge, Firefox, or Safari. It automatically queries navigator.gpu.requestAdapter(), inspects shader-f16 and compute limits, and lets you execute a real 60-pass WGSL compute shader benchmark on your GPU.

What does shader-f16 mean in WebGPU?

shader-f16 allows WebGPU compute and fragment shaders to execute 16-bit floating-point (FP16) math natively on tensor/shader cores, doubling throughput and cutting VRAM bandwidth in half during 4K AI video super-resolution.

How do I enable WebGPU if the test says Disabled or Adapter Blocked?

In Chrome or Edge, enable chrome://flags/#enable-unsafe-webgpu. In Firefox, open about:config and set dom.webgpu.enabled and gfx.webgpu.force-enabled to true. See our full 1-click flag guide at upscalex.video/enable-webgpu/.

WebGPU Benchmark & Browser Compatibility Test

Verify your browser's navigator.gpu adapter, FP16 shader support (`shader-f16`), compute workgroup limits, and 4K WebCodecs hardware encoding—then benchmark real WGSL neural convolution on your GPU.

Scanning GPU...

WebGPU Adapter

Detecting...

navigator.gpu.requestAdapter()

FP16 Tensor Shaders

Checking...

shader-f16 extension

Max Storage Buffer

Checking...

maxTextureDimension2D: —

4K WebCodecs H.264

Checking...

avc1.640033 (3840×2160)

WGSL Compute Stress Test

Run 4K Neural Super-Resolution Shader Benchmark

Dispatches 60 multi-channel 3×3 convolutional compute passes (`@workgroup_size(16, 16)`) to measure your GPU's real AI upscaling speed.

Compute Throughput

— GFLOPS

Click "Run GPU Benchmark"

Est. 1080p → 4K Speed

— FPS

Anime4K CNN / Katana UNet

Recommended AI Preset

Waiting for test...

Auto-tuned for your GPU

100% Free Client-Side WebGPU Test

Test Your GPU Now: Upscale Any Video or Image to 4K

Drop an MP4, WebM, MOV, or image below to launch the live split-screen 4K WebGPU AI upscaler directly in your browser—zero watermarks, zero uploads.

WebGPU Disabled? Copy Browser Flags →

Browser WebGPU Support Matrix (2026)

Browser & OS	Default Status	Flag / Preference to Enable	Backend API
Chrome / Edge 113+ (Windows, macOS)	Enabled by Default	chrome://flags/#enable-unsafe-webgpu	D3D12 / Apple Metal
Chrome / Brave (Linux)	Requires Flag	chrome://flags/#enable-unsafe-webgpu + #enable-vulkan	Vulkan
Mozilla Firefox 130+ (Win / Linux)	about:config	dom.webgpu.enabled + gfx.webgpu.force-enabled	wgpu (DX12 / Vulkan)
Apple Safari 18+ (macOS / iOS 18)	Enabled by Default	Develop → Feature Flags → WebGPU	Apple Metal