Device & browser capabilities

Read screen, storage, media, language and browser feature information.

Explore the tools

5 focused tools, with an explanation and a practical guide for each check.

Measure screen size, layout and visual viewports, pixel ratio and orientation in this tab.

Check whether common browser APIs are exposed, including Web Crypto, WebAssembly, WebGPU and workers.

Read this origin’s storage estimate, quota and persistence status without opening stored records.

Inspect advertised support for common video and audio formats without recording or playing media.

Inspect browser languages, timezone, calendar and number-format settings with local formatting examples.