Browser language settings

navigator.language is the preferred browser or interface language. navigator.languages lists languages the user understands in priority order, usually as tags such as ja-JP or en-US.

How NetKarte shows them

Check Language and Preferred languages in NetKarte's Browser card. Read them as the browser's exposed language preference and ordering, separately from the page language chosen at the top right.

Language displays navigator.language; Preferred languages joins navigator.languages with commas. For an initial locale without a cookie, NetKarte uses HTTP Accept-Language, which follows a different path from these client values.

How to read the result

The first language is normally most preferred. A site can choose another supported language or fallback. These values do not prove nationality or current location.

Privacy

A detailed language list can be one environmental characteristic. NetKarte only displays it and does not create a tracking ID or store it in the locale cookie.

Why does the language field remain English after choosing JP?

Site display language and browser language settings are separate. Selecting JP changes NetKarte's page and saved preference, not the browser's language list.

Check the URL locale first, saved choice second, and browser settings third. An explicit locale URL wins; without one, NetKarte uses the locale cookie, Accept-Language, then English. A Japanese page with English browser diagnostics is not contradictory. Run diagnostics again to inspect changed browser values.