The safest way to get a high-quality .otf or .ttf file is to purchase a license.
Downloading fonts from "free" or unverified sources often results in missing glyphs (especially for complex Thai tonal marks), poor letter spacing (kerning), or technical bugs that can crash design software. For commercial work, using a ensures your typography remains crisp across both print and digital mediums. PSL Kanda Pro Font Family - CDNFonts
: If you are looking for free, high-quality Thai fonts with a similar clean, sans-serif aesthetic to Kanda, Google Fonts offers modern alternatives like Prompt , Kanit , and Sarabun which are open-source and web-ready.