One challenge for using Thai script on a computer is that Thai characters are more vertical than roman alphabet characters. If one is mixing roman and Thai characters in a document, the Thai characters tend to be much smaller (and therefore illegible if the roman characters are optimized for space and legibility).
At this point I have found two fonts with excellent mixed-character set support. Another has reasonable support in a stylized font.
Linux Libertine, which continues to amaze as a one of the most successful open source truetype font projects has excellent Thai character support. Libertine is a Serif font.
Free Thailand Government Fonts
- For a Sans Serif font (with full roman character support), the Fah kwang font pdf sample is an excellent option.
- For a stylized font (without roman character support), Charmonman pdf sample is an excellent option. is a nice option.
Additional Thai Script (Font) resources
- University of Hawaii Thai Fonts
- Luc Devroye at McGill University has an amazing Thai Fonts resource page
via Jeff McNeill » Jeff McNeill – Publishing, Marketing, Southeast Asia http://jeffmcneill.com/3-fonts-with-good-thai-and-roman-character-support/