Thai sans serif fonts

Most Thai you read on a screen is set in a sans: Thai letters with even strokes, paired with a sans serif Latin. This is the largest group in the catalog, with 37 families, and most of them are looped. It holds the national fonts used in official documents, led by TH Sarabun New and its open-licence successor Sarabun; interface faces from Linux desktops such as Garuda, Loma and Waree; families drawn to match a Latin superfamily, such as IBM Plex Sans Thai and Noto Sans Thai; and modern loopless faces such as Kanit, Prompt and Anuphan. It also includes the two square block faces, Chakra Petch and TH Chakra Petch.

For long text, choose a family with several weights and a calm rhythm, set it a size larger than you would set Latin, and leave a line height of 1.6 to 1.8 for the marks above and below.