lang-codes
Language tags
BCP 47 language identifiers for `lang` and `hreflang` attributes.
Use BCP 47 tags on lang and hreflang. Primary language subtags are usually ISO 639-1 two-letter codes; regions extend with a hyphen (en-US, en-GB).
| Example | Meaning |
|---|---|
| en | English (general). |
| en-US | English as used in the United States. |
| fr | French. |
| de | German. |
| ja | Japanese. |
| zh-Hans | Chinese written in simplified characters. |
| x-default | hreflang fallback for unmatched locales. |