GPU & Codec Checker

Is your GPU hardware-accelerating video?

Find out exactly which codecs your browser can decode and encode in hardware - H.264, H.265, AV1, VP9 and more. No install, no upload, nothing leaves your device.

H.264 / AVC H.265 / HEVC AV1 VP9 / VP8 HDR / 4K WebCodecs API WebGPU

This tool queries your browser's MediaCapabilities, WebCodecs and WebGL APIs to reveal your GPU model and exactly which video formats run in hardware - the browser equivalent of DXVA Checker, with no install required.

Initialising...
GPU Information

Decode Support

Encode Support

Understanding the results
  • Hardware  GPU-accelerated decode/encode - fast and power-efficient.
  • Software  CPU-only - works everywhere but uses more resources.
  • Not Supported  This browser/OS cannot handle this codec at all.
  • Likely  canPlayType() says yes, but full capability is unknown.
  • Power Efficient = Yes means the browser confirms hardware acceleration is active.
  • Results reflect browser capability - some codecs may still work in desktop players.

What is hardware video decoding?

Modern GPUs include dedicated video decode engines - Intel Quick Sync, NVIDIA NVDEC, AMD VCN - that can decompress H.264, H.265 and AV1 streams entirely on the GPU without touching the main CPU. The result is smoother 4K playback, lower CPU temperature, and longer battery life on laptops.

This tool is the browser equivalent of the Windows desktop utility DXVA Checker. It uses the MediaCapabilities and WebCodecs APIs introduced in modern browsers to query exactly what your GPU supports at each resolution and profile - useful for diagnosing video playback issues or confirming HDR and 4K decode support before buying or configuring software.