coderef

Language detectorLimited availability

The LanguageDetector API identifies the likely natural language that some text is written in. You can use this API to supplement machine translation when the source source language is not known.

Not yet supported in all major browsers — check the table and provide a fallback.

How to use ↓Compare browsers

Browser support

DesktopChrome
1–137Not supported
138+Supportedsince Jun 24, 2025
Current: 155
Edge
12–147Not supported
148+Supportedsince May 7, 2026
Current: 154
Firefox
✕Not supportedup to 157
Current: 157
Safari
✕Not supportedup to 27
Current: 27
MobileChrome Android
✕Not supportedup to 155
Current: 155
Firefox Android
✕Not supportedup to 157
Current: 157
Safari iOS
✕Not supportedup to 27
Current: 27

How to use

Not supported in Firefox, Safari, Chrome Android, Firefox Android, Safari iOS. Use feature detection below and provide a fallback (or a polyfill) for those browsers.

Example

Full syntax and examples are on MDN: LanguageDetector.

Feature detection

JS · check before using
if ("LanguageDetector" in globalThis) {
  // LanguageDetector is available
} else {
  // load a polyfill or use a fallback
}

Documentation (MDN)

Specification

Sub-features

Support for each part of the feature (8). The overall table above shows when the whole feature works.

Sub-featureChromeEdgeFirefoxSafariChrome AndroidFirefox AndroidSafari iOS
LanguageDetector138148✕✕✕✕✕
LanguageDetector.availability_static138148✕✕✕✕✕
LanguageDetector.create_static138148✕✕✕✕✕
LanguageDetector.destroy138148✕✕✕✕✕
LanguageDetector.detect138148✕✕✕✕✕
LanguageDetector.expectedInputLanguages138148✕✕✕✕✕
LanguageDetector.inputQuota138148✕✕✕✕✕
LanguageDetector.measureInputUsage138148✕✕✕✕✕