BCP 47/IANA language subtag data in JSON format.

A Swiss Army knife for language tags.

💪 Try as hard as possible to detect the client's language tag ("locale") in node or the browser. Browserify and Webpack friendly!

Resolve the preferred locale based on the value of an `Accept-Language` HTTP header.

Match BCP 47 language tags with language ranges per RFC 4647

A set of tools for working with accent data in Mozilla's Common Voice dataset

Regular expressions for matching IETF language tags (BCP 47)

Language tag parser for JavaScript and Node.js

Code for parsing the IANA Language Subtag Registry and implementing BCP 47 support in Firefox.

BCP 47 language subtag data, including the IANA Language Subtag Registry

Java and GWT implementation of RFC-5646 (language tag)

[WIP] Internationalization (i18n) and localization (l10n)

PHP helpers to validate and normalize IETF BCP 47 language tag

The Language Variant Tag (LVTag) format is a systematic approach to language classification that extends the BCP 47 standard using private-use subtags. It enables precise identification of language varieties across multiple dimensions including formality, politeness, domain, and orthography.

An example of how to deal with multi-language support in your API

Parse and stringify BCP 47 language tags

Language negotiation helpers

A collection of useful utilities for bcp47 and rfc4647

Provides standardized tags that is used to identify human languages and regions and their internationalization. Child project of bcp47py.

Validates BCP-47 Language Tags using the npm package bcp-47 and formats them in a unique way to ensure consistency.