0.9,th-th Info

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

The string breaks down into two distinct parts defined by the HTTP/1.1 specification :

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

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

Are you looking to or analyze its impact on SEO and localized content delivery ? : Developers use these strings to match user

The server analyzes this list to determine which version of a page to serve:

When a web browser sends a request, it might include a header like: Accept-Language: en-US, th-TH;q=0.9 The server analyzes this list to determine which

: 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