0.9,th-th

While primarily used in HTTP, this syntax appears in other technical environments:

: The server looks for a version in US English ( q=1.0 by default).

This string is a specific component used in , specifically within the Accept-Language header. It communicates a user's preference for Thai (Thailand) with a weighted "quality" (q-factor) of 0.9 . 1. Technical Decomposition 0.9,th-TH

: If English isn't available, it serves the Thai version because it has the next highest weight ( q=0.9 ).

Are you looking to or analyze its impact on SEO and localized content delivery ? While primarily used in HTTP, this syntax appears

: This identifies the language as Thai ( th ) and the region as ( TH ).

: Often written as q=0.9 , this is a Relative Quality Factor . It ranks user preferences on a scale from 0.0 to 1.0. A value of 0.9 indicates it is a secondary preference if a primary language (defaulting to q=1.0 ) is unavailable. 2. Practical Application: How Servers Use It : This identifies the language as Thai (

: Developers use these strings to match user OS settings with available translation files.