While primarily used in HTTP, this syntax appears in other technical environments:
: Developers use these strings to match user OS settings with available translation files. 0.9,th-TH
: The server looks for a version in US English ( q=1.0 by default). While primarily used in HTTP, this syntax appears
: This identifies the language as Thai ( th ) and the region as ( TH ). When a web browser sends a request, it
When a web browser sends a request, it might include a header like: Accept-Language: en-US, th-TH;q=0.9
: If English isn't available, it serves the Thai version because it has the next highest weight ( q=0.9 ).
: Used by clients to request specific data formats or localized error messages from RESTful APIs. Summary Table: Component Meanings th Language Code ISO 639-1 code for Thai TH Region Code ISO 3166-1 alpha-2 code for Thailand 0.9 90% weight ; high priority but not the absolute first choice