Browser Information Web API Demonstrations

Inspect navigator details including online state, platform, cookie state, and vendor.

Inspect the browser navigator.userAgent string.

Query modern User-Agent Client Hints (sec-ch-ua, mobile, platform, architecture).

Inspect screen resolution, color depth, pixel ratio, and available width/height.

Measure viewport inner/outer dimensions, scroll position, and frame geometry.

Inspect system preferred languages array navigator.languages.

Query user's local IANA timezone name and UTC offset.

Inspect device approximate RAM memory capacity in gigabytes.

Query logical CPU core thread count navigator.hardwareConcurrency.