Website Language

A webmaster should use the lang attribute in a meta tag, or inside an enclosing span or div tag in HTML. Search engines may be able to detect language reasonably accurately, but this tag also provides additional geographical information. The language codes es-mx, es-us, and es-es represent Spanish from Mexico, the United States, and Spain, respectively. This is helpful, because a language dialect and region cannot be detected easily, if at all, just by examining the actual copy. Here’s an example:

Use ‘CONTENT’ to indicate language in a particular text region.
Or:
Use ‘ in the header (“”) section of the page to indicate language of the entire page

• English = en-AU (Australia), en-CA (Canada), en-GB (UK), en-US (United States), en-HK(Hong Kong)
• German = de-AT (Austria), de-BE (Belgium), de-CH (Switzerland), de-DE (Germany)
• French = fr-CA (Canada), fr-CH (Switzerland), fr-FR (France), fr-MC (Monaco)
• Spanish = es-AR (Argentina), es-CU (Cuba), es-ES (Spain), es-MX (Mexico), es-US (United States)

You can find a complete list at here.

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